Unmanned aerial vehicle firework launching control system with low power consumption

Abstract

The invention relates to the technical field of circuit design, and aims to provide a low-power-consumption unmanned aerial vehicle firework launching control system. An interface module is electrically connected with an MCU module through a signal conversion module; the MCU module is electrically connected with the driving output module; the interface module is electrically connected with the voltage reduction module through the voltage stabilization module; the voltage reduction module provides electric energy for other modules; the MCU module is used for controlling a launching program of the unmanned aerial vehicle fireworks and realizing low-power-consumption management through external interruption; the signal conversion module is used for receiving an external USB equipment signal of the interface module, realizing conversion from a USB protocol to a UART protocol and transmitting the signal to the MCU module; the driving output module is used for realizing accurate firework emission control according to the PWM signal output by the MCU module; the interface module is used for receiving an external USB equipment signal and providing a USB interface power supply; the voltage stabilizing module is used for converting a USB interface power supply into 5V voltage; the voltage reduction module converts 5V voltage into stable 3.3 V voltage.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit design, and more specifically, to a low-power consumption unmanned aerial vehicle fireworks launching control system. Background Art

[0002] In the current process of scientific and technological development, fireworks electronic ignition devices, as an important technical equipment, have broad application prospects in many fields. However, it cannot be ignored that existing fireworks electronic ignition devices have many defects, namely high power consumption and poor power supply stability. These two major problems greatly limit their application in the field of drones.

[0003] High power consumption means continuous power consumption. Existing electronic ignition devices for fireworks usually lack a sleep wake-up function, which causes the circuit to always be in operation and continuously consume power. This will cause the following problems: (1) Shortened battery life; (2) The battery capacity of drones is limited, and continuous power consumption will significantly shorten the flight time of drones, limiting the duration of fireworks performances; (3) Long-term operation will cause the circuit to heat up, which may cause circuit failure or safety hazards; (4) Continuous high-load operation will accelerate battery aging and reduce battery life.

[0004] Poor power supply stability leads to unstable ignition current. Existing devices usually use linear regulators or simple DC-DC step-down modules to power the fireworks ignition board, which will lead to the following problems: (1) Unstable ignition effect. Unstable ignition current will lead to poor fireworks ignition effect, such as inaccurate ignition timing and low ignition success rate; (2) Unstable ignition current may cause safety hazards such as circuit failure or fire.

[0005] In addition, insufficient launch control accuracy is also a major challenge in existing drone fireworks launch control systems. Traditional control systems lack precise ignition control methods during the fireworks launch process, resulting in inconsistent fireworks launch timing, affecting the performance and viewing experience. At the same time, the existing system lacks optimization in circuit design, resulting in high circuit complexity and increased costs, and is prone to interference during high-frequency signal transmission and signal conversion, affecting the overall stability and reliability of the system.

[0006] It is precisely because of these defects that existing fireworks electronic ignition devices are difficult to be widely and effectively used in the field of drones; in order to promote the development of innovative applications combining drones with fireworks performances, it is necessary to solve these problems and develop new fireworks electronic ignition devices with low power consumption and stable power supply. Summary of the invention

[0007] The present invention aims to provide a low-power consumption unmanned aerial vehicle fireworks launch control system to solve the technical problems in the background technology.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a low-power consumption UAV fireworks launch control system, including an MCU module, a signal conversion module, an interface module, a voltage stabilization module, a voltage reduction module and a drive output module; The interface module is electrically connected to the MCU module through the signal conversion module; the MCU module is electrically connected to the drive output module; the interface module is electrically connected to the step-down module through the voltage stabilizing module; the step-down module provides power to other modules; The MCU module is used to control the launch program of the drone fireworks and achieve low power consumption management through external interrupts; The signal conversion module is used to receive the external USB device signal of the interface module, realize the conversion from USB protocol to UART protocol, and transmit it to the MCU module; The drive output module is used to realize accurate emission control of fireworks according to the PWM signal output by the MCU module; The interface module is used to receive external USB device signals and provide USB interface power; The voltage stabilizing module is used to convert the USB interface power supply into a 5V voltage; The step-down module is used to convert a 5V voltage into a stable 3.3V voltage.

[0009] Preferably, the MCU module includes a microcontroller U1, a resistor R1 and a resistor R2; The NRST pin of the microcontroller U1 is connected to a 3.3V voltage via a resistor R1; The PA14 pin of the microcontroller U1 is connected to a 3.3V voltage via a resistor R2; The PB3 pin and the PB7 pin of the microcontroller U1 are both electrically connected to the signal conversion module; The PA6 pin, PA7 pin and PB0 pin of the microcontroller U1 are all electrically connected to the drive output module; The PA2 pin of the microcontroller U1 is set to external interrupt mode.

[0010] Preferably, the signal conversion module includes a signal conversion chip U2, a resistor R3 and a capacitor C1; The VCC pin of the signal conversion chip U2 is connected to a 3V voltage and is grounded through a capacitor C1; The UD+ pin and the UD- pin of the signal conversion chip U2 are both electrically connected to the interface module; The TXD pin and the RXD pin of the signal conversion chip U2 are electrically connected to the PB3 pin and the PB7 pin of the microcontroller U1 respectively; The CTS pin and the DTR pin of the signal conversion chip U2 are electrically connected via a resistor R3.

[0011] Preferably, the driving output module includes a first driving submodule, a second driving submodule and a third driving submodule; The first driving submodule includes a MOS tube Q1, resistors R4 to R6, a connector CN1 and a light emitting diode D1; The positive electrode of the light emitting diode D1 is connected to a 3.3V voltage through a resistor R4, and the negative electrode of the light emitting diode D1 is electrically connected to one end of the connector CN1; The other end of the connector CN1 is connected to a 3.3V voltage; The gate of the MOS transistor Q1 is electrically connected to the PA6 pin of the microcontroller U1 through a resistor R5 and is electrically connected to the source of the MOS transistor Q1 through a resistor R6, and the source of the MOS transistor Q1 is grounded; The drain of the MOS tube Q1 is electrically connected to the cathode of the light emitting diode D1; The second driving submodule includes a MOS tube Q2, resistors R7 to R9, a connector CN2 and a light emitting diode D2; The positive electrode of the light emitting diode D2 is connected to a 3.3V voltage through a resistor R7, and the negative electrode of the light emitting diode D2 is electrically connected to one end of the connector CN2; The other end of the connector CN2 is connected to a 3.3V voltage; The gate of the MOS transistor Q2 is electrically connected to the PA7 pin of the microcontroller U1 through a resistor R8 and is electrically connected to the source of the MOS transistor Q2 through a resistor R9, and the source of the MOS transistor Q2 is grounded; The drain of the MOS tube Q2 is electrically connected to the cathode of the light emitting diode D2; The third driving submodule includes a MOS tube Q3, a resistor R10 to a resistor R12, a connector CN3 and a light emitting diode D3; The positive electrode of the light emitting diode D3 is connected to a 3.3V voltage through a resistor R10, and the negative electrode of the light emitting diode D3 is electrically connected to one end of the connector CN3; The other end of the connector CN3 is connected to a 3.3V voltage; The gate of the MOS transistor Q3 is electrically connected to the PB0 pin of the microcontroller U1 through a resistor R11 and is electrically connected to the source of the MOS transistor Q3 through a resistor R12, and the source of the MOS transistor Q3 is grounded; The drain of the MOS tube Q3 is electrically connected to the cathode of the light emitting diode D3.

[0012] Preferably, the interface module includes a YTC chip U3; The four VBUS pins of the YTC chip U3 are connected to the USB interface power supply; The four GND pins of the YTC chip U3 are grounded; The Dp1 pin and the Dn1 pin of the YTC chip U3 are electrically connected to the UD+ pin and the UD- pin of the signal conversion chip U2, respectively, or the Dp2 pin and the Dn2 pin of the YTC chip U3 are electrically connected to the UD+ pin and the UD- pin of the signal conversion chip U2, respectively.

[0013] Preferably, the voltage stabilizing module includes a voltage stabilizer U5 and capacitors C7-C10; One end of the USB interface power input capacitor C7, one end of the capacitor C8 and the IN pin of the voltage regulator U5; The OUT pin of the voltage regulator U5 is electrically connected to one end of the capacitor C9 and one end of the capacitor C10, and outputs a 5V voltage; The other end of the capacitor C7, the other end of the capacitor C8, the other end of the capacitor C9, the other end of the capacitor C10 and the GND pin of the regulator U5 are all grounded.

[0014] Preferably, the voltage reduction module includes an input filter submodule, a power conversion submodule and a voltage divider filter submodule; wherein: The input filter submodule includes capacitors C2-C4 and a resistor R13; One end of capacitor C2, one end of capacitor C3 and one end of resistor R13 are all connected to a 5V voltage; The other end of capacitor C2, the other end of capacitor C3 and one end of capacitor C4 are all grounded; The other end of the capacitor C4 is electrically connected to the other end of the resistor R13; The two ends of the resistor R13 are respectively connected to the two input ends of the power conversion submodule; The power conversion submodule includes a power conversion chip U4; The two ends of the resistor R13 are electrically connected to the IN pin and the EN pin of the power conversion chip U4 respectively; The SW pin and the FB pin of the power conversion chip U4 are both electrically connected to the output filter submodule; The output filter submodule includes an inductor L1, a resistor R14, a resistor R15, a capacitor C5 and a capacitor C6; The SW pin of the power conversion chip U4 is electrically connected to one end of the inductor L1; The other end of the inductor L1 is electrically connected to one end of the resistor R14, one end of the capacitor C5 and one end of the capacitor C6; The FB pin of the power conversion chip U4 is electrically connected to the other end of the resistor R14 and one end of the resistor R15; the other end of the resistor R15 is electrically connected to the other end of the capacitor C5 and the other end of the capacitor C6; and both ends of the capacitor C6 output a 3.3V voltage.

[0015] Preferably, it also includes a burning module, specifically including a connector CN4, a screw SCREW1 and a screw SCREW2; Pin 1 of the connector CN4 is grounded; Pins 2 and 3 of the connector CN4 are electrically connected to pins PA13 and PA14 of the microcontroller U1 respectively; Pin 1 of the connector CN4 is connected to a 3.3V voltage; Screw SCREW1 and screw SCREW2 are used to fix the circuit board.

[0016] Preferably, the microcontroller U1 is specifically a single chip microcomputer STM32G030F6P6.

[0017] Preferably, the signal conversion chip U2 is specifically a CH340X chip.

[0018] Preferably, the YTC chip U3 is specifically a YTC-TC16S-128 chip.

[0019] Preferably, the voltage regulator U5 is specifically a LDO linear voltage regulator of model 78L05.

[0020] The beneficial effects of the present invention are: Compared with the prior art, the present application provides a low-power UAV fireworks launch control system, which adopts the STM32G030F6P6 microcontroller and utilizes mechanisms such as sleep mode and external interrupt wake-up to achieve low-power management of the system and effectively extend the flight time of the UAV; the PWM signal output by the MCU module drives the NMOS tube to achieve precise control of the fireworks igniter, ensuring that the fireworks are ignited at the predetermined time and predetermined intensity, and improving the accuracy and reliability of the launch; the RY3408 DC-DC converter is used to efficiently convert the 5V power supply to 3.3V, ensuring stable power supply to each module of the system, reducing power conversion loss, and improving the overall system performance; the CH340X signal conversion chip is used to realize the conversion between the USB protocol and the UART protocol, supporting the USB Type-C interface, improving the data interaction capability of the system with external devices, and enhancing the compatibility and scalability of the system; three independent driver sub-modules are designed to control different fireworks igniters respectively, enhancing the control flexibility and expansion capability of the system; the MCU module, signal conversion module, interface module, voltage regulator module, step-down module and driver output module are integrated into a highly integrated control system, simplifying the circuit design and reducing the complexity of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a low-power UAV fireworks launch control system module according to an embodiment of the present invention; Figure 2 is a schematic diagram of an MCU module according to an embodiment of the present invention; Figure 3 is a schematic diagram of a signal conversion module according to an embodiment of the present invention; Figure 4 is a schematic diagram of a drive output module according to an embodiment of the present invention; Figure 5 is a schematic diagram of an interface module according to an embodiment of the present invention; Figure 6 is a schematic diagram of a voltage stabilizing module according to an embodiment of the present invention; Figure 7 is a schematic diagram of a step-down module according to an embodiment of the present invention; Figure 8 It is a schematic diagram of a burning module according to an embodiment of the present invention.

[0022] The drawings are only used for illustrative purposes and are not to be construed as limitations of the present invention. To better illustrate the embodiments, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figure 1 As shown, a low-power UAV fireworks launch control system of the present invention includes an MCU module, a signal conversion module, an interface module, a voltage stabilization module, a voltage reduction module and a drive output module; The interface module is electrically connected to the MCU module through the signal conversion module; the MCU module is electrically connected to the drive output module; the interface module is electrically connected to the step-down module through the voltage stabilizing module; the step-down module provides power to other modules; The MCU module is used to control the launch program of the drone fireworks and achieve low power consumption management through external interrupts; The signal conversion module is used to receive the external USB device signal of the interface module, realize the conversion from USB protocol to UART protocol, and transmit it to the MCU module; The drive output module is used to realize accurate emission control of fireworks according to the PWM signal output by the MCU module; The interface module is used to receive external USB device signals and provide USB interface power; The voltage stabilizing module is used to convert the USB interface power supply into a 5V voltage; The step-down module is used to convert a 5V voltage into a stable 3.3V voltage.

[0025] In the above scheme, this scheme provides an integrated UAV fireworks launch control system, which can receive control signals from external USB devices, process them through the MCU module, and accurately control the launch of fireworks, while having low-power management capabilities; the specific effect is to use the MCU's program control capabilities and low-power management of external interrupts to improve the system's intelligence level and endurance; the interface module facilitates the connection of external devices and the input of control signals; the signal conversion module realizes the conversion between different protocols and ensures the compatibility of data transmission; the drive output module can accurately control the launch timing and sequence of fireworks according to the instructions of the MCU. The voltage stabilization module and the step-down module ensure the stable power supply of each module of the system.

[0026] The specific implementation mechanism is as follows: the interface module receives external USB signals, the signal conversion module converts them into UART signals that can be recognized by the MCU module, the MCU module generates PWM control signals according to the preset program and the received signals, and the drive output module controls the on and off of the fireworks igniter according to the PWM signal, thereby achieving accurate emission; the external interrupt function of the MCU module enables it to enter low-power mode in idle state, and when there is an external signal, it can be quickly awakened, reducing the overall power consumption of the system. The voltage stabilization module and the buck module provide a stable operating voltage for the entire system.

[0027] Preferably, Figure 2 As shown, the MCU module includes a microcontroller U1, a resistor R1 and a resistor R2; The NRST pin of the microcontroller U1 is connected to a 3.3V voltage via a resistor R1; The PA14 pin of the microcontroller U1 is connected to a 3.3V voltage via a resistor R2; The PB3 pin and the PB7 pin of the microcontroller U1 are both electrically connected to the signal conversion module; The PA6 pin, PA7 pin and PB0 pin of the microcontroller U1 are all electrically connected to the drive output module; The PA2 pin of the microcontroller U1 is set to external interrupt mode.

[0028] In the above scheme, the NRST pin of the microcontroller U1 is connected to a 3.3V voltage through a resistor R1 to achieve power-on reset; the PA14 pin is connected to a 3.3V voltage through a resistor R2; the PB3 and PB7 pins are electrically connected to the signal conversion module to achieve USART communication; the PA6, PA7 and PB0 pins are electrically connected to the drive output module to output a PWM signal; the PA2 pin is set to external interrupt mode for USB wake-up.

[0029] The specific implementation mechanism is as follows: resistors R1 and R2 provide a pull-up function to ensure the initial state of the pin of the microcontroller U1; PB3 and PB7 serve as the TX and RX pins of USART to transmit and receive data with the signal conversion module; PA6, PA7 and PB0 are configured as PWM output pins of timer 3 to generate a PWM signal that controls the drive output module; PA2 is configured as an external interrupt input pin, and when a USB wake-up signal from the signal conversion module is received, an interrupt is triggered to wake up the MCU module.

[0030] Preferably, Figure 3 As shown, the signal conversion module includes a signal conversion chip U2, a resistor R3 and a capacitor C1; The VCC pin of the signal conversion chip U2 is connected to a 3V voltage and is grounded through a capacitor C1; The UD+ pin and the UD- pin of the signal conversion chip U2 are both electrically connected to the interface module; The TXD pin and the RXD pin of the signal conversion chip U2 are electrically connected to the PB3 pin and the PB7 pin of the microcontroller U1 respectively; The CTS pin and the DTR pin of the signal conversion chip U2 are electrically connected via a resistor R3.

[0031] In the above scheme, the present application realizes the conversion from USB to UART protocol and ensures the stability and reliability of signal transmission; the USB data signal of the interface module is input to the signal conversion chip U2 through the UD+ and UD- pins, and the internal circuit of the signal conversion chip U2 converts the USB protocol into the UART protocol, and outputs it to the PB3 and PB7 pins of the microcontroller U1 through the TXD and RXD pins; the capacitor C1 filters out the power supply noise to ensure the stability of the chip power supply; the specific role of the resistor R3 depends on the configuration of the CTS and DTR pins in the circuit design.

[0032] Preferably, Figure 4 As shown, the driving output module includes a first driving submodule, a second driving submodule and a third driving submodule; The first driving submodule includes a MOS tube Q1, resistors R4 to R6, a connector CN1 and a light emitting diode D1; The positive electrode of the light emitting diode D1 is connected to a 3.3V voltage through a resistor R4, and the negative electrode of the light emitting diode D1 is electrically connected to one end of the connector CN1; The other end of the connector CN1 is connected to a 3.3V voltage; The gate of the MOS transistor Q1 is electrically connected to the PA6 pin of the microcontroller U1 through a resistor R5 and is electrically connected to the source of the MOS transistor Q1 through a resistor R6, and the source of the MOS transistor Q1 is grounded; The drain of the MOS tube Q1 is electrically connected to the cathode of the light emitting diode D1; The second driving submodule includes a MOS tube Q2, resistors R7 to R9, a connector CN2 and a light emitting diode D2; The positive electrode of the light emitting diode D2 is connected to a 3.3V voltage through a resistor R7, and the negative electrode of the light emitting diode D2 is electrically connected to one end of the connector CN2; The other end of the connector CN2 is connected to a 3.3V voltage; The gate of the MOS transistor Q2 is electrically connected to the PA7 pin of the microcontroller U1 through a resistor R8 and is electrically connected to the source of the MOS transistor Q2 through a resistor R9, and the source of the MOS transistor Q2 is grounded; The drain of the MOS tube Q2 is electrically connected to the cathode of the light emitting diode D2; The third driving submodule includes a MOS tube Q3, a resistor R10 to a resistor R12, a connector CN3 and a light emitting diode D3; The positive electrode of the light emitting diode D3 is connected to a 3.3V voltage through a resistor R10, and the negative electrode of the light emitting diode D3 is electrically connected to one end of the connector CN3; The other end of the connector CN3 is connected to a 3.3V voltage; The gate of the MOS transistor Q3 is electrically connected to the PB0 pin of the microcontroller U1 through a resistor R11 and is electrically connected to the source of the MOS transistor Q3 through a resistor R12, and the source of the MOS transistor Q3 is grounded; The drain of the MOS tube Q3 is electrically connected to the cathode of the light emitting diode D3.

[0033] In the above scheme, a driving circuit is provided which can accurately control the on and off of the fireworks igniter according to the PWM signal output by the MCU module, and indicate the working status through the light-emitting diode; by using the MOS tube as a switching device, the on and off of the fireworks igniter can be quickly and reliably controlled; the resistor R5 is used as a gate current limiting resistor to protect the output pin of the microcontroller U1; the resistor R6 provides a pull-down function to ensure that the MOS tube is reliably turned off when the MCU module outputs a low level; the connector CN1 is used to connect an external fireworks igniter; the light-emitting diode D1 and its current limiting resistor R4 are used to indicate the working status of the channel; and by using multiple identical driving sub-modules, the emission of multiple fireworks can be controlled simultaneously.

[0034] The specific implementation mechanism is as follows: when the PA6 pin of the microcontroller U1 outputs a high level, the MOS tube Q1 is turned on, a loop is formed at both ends of the connector CN1, and current flows through the connected firework igniter to achieve ignition; when the PA6 pin outputs a low level, the MOS tube Q1 is cut off, the loop is disconnected, and the ignition stops; the PWM signal can control the on-off time and power of the igniter by controlling the duration of the high level; the light-emitting diode D1 is lit when the MOS tube is turned on, indicating that the channel is working.

[0035] Preferably, Figure 5 As shown, the interface module includes a YTC chip U3; The four VBUS pins of the YTC chip U3 are connected to the USB interface power supply; The four GND pins of the YTC chip U3 are grounded; The Dp1 pin and the Dn1 pin of the YTC chip U3 are electrically connected to the UD+ pin and the UD- pin of the signal conversion chip U2, respectively, or the Dp2 pin and the Dn2 pin of the YTC chip U3 are electrically connected to the UD+ pin and the UD- pin of the signal conversion chip U2, respectively.

[0036] In the above scheme, the power of the external USB device is input to the system through the VBUS pin of the YTC chip U3, and is converted into the voltage required by other modules by the voltage regulator module and the buck module. The data signal of the external USB device is input to the YTC chip U3 through the Dp1 / Dn1 or Dp2 / Dn2 pin, and transmitted to the UD+ / UD- pin of the signal conversion chip U2.

[0037] Preferably, Figure 6 As shown, the voltage stabilizing module includes a voltage stabilizer U5 and capacitors C7-C10; One end of the USB interface power input capacitor C7, one end of the capacitor C8 and the IN pin of the voltage regulator U5; The OUT pin of the voltage regulator U5 is electrically connected to one end of the capacitor C9 and one end of the capacitor C10, and outputs a 5V voltage; The other end of the capacitor C7, the other end of the capacitor C8, the other end of the capacitor C9, the other end of the capacitor C10 and the GND pin of the regulator U5 are all grounded.

[0038] In the above scheme, the voltage inputted by USB_IN is stably converted into +5V output through the voltage regulator U5; for example, when the input voltage fluctuates within a certain range, the output voltage can be maintained at about 5V to meet the requirements of the subsequent circuit for stable voltage and avoid performance degradation or failure due to unstable voltage; the capacitors C7 (100nF), C8 (10uF), C9 (10uF) and C10 (100nF) in the circuit play a filtering role, filtering out high-frequency noise and ripples in the input and output voltages, making the output voltage smoother and purer.

[0039] Preferably, Figure 7 As shown, the voltage reduction module includes an input filter submodule, a power conversion submodule and a voltage divider filter submodule; wherein: The input filter submodule includes capacitors C2-C4 and a resistor R13; One end of capacitor C2, one end of capacitor C3 and one end of resistor R13 are all connected to a 5V voltage; The other end of capacitor C2, the other end of capacitor C3 and one end of capacitor C4 are all grounded; The other end of the capacitor C4 is electrically connected to the other end of the resistor R13; The two ends of the resistor R13 are respectively connected to the two input ends of the power conversion submodule; The power conversion submodule includes a power conversion chip U4; The two ends of the resistor R13 are electrically connected to the IN pin and the EN pin of the power conversion chip U4 respectively; The SW pin and the FB pin of the power conversion chip U4 are both electrically connected to the voltage divider filter submodule; The voltage-dividing filter submodule includes an inductor L1, a resistor R14, a resistor R15, a capacitor C5 and a capacitor C6; The SW pin of the power conversion chip U4 is electrically connected to one end of the inductor L1; The other end of the inductor L1 is electrically connected to one end of the resistor R14, one end of the capacitor C5 and one end of the capacitor C6; The FB pin of the power conversion chip U4 is electrically connected to the other end of the resistor R14 and one end of the resistor R15; the other end of the resistor R15 is electrically connected to the other end of the capacitor C5 and the other end of the capacitor C6; and both ends of the capacitor C6 output a 3.3V voltage.

[0040] In the above scheme, the input filter submodule effectively suppresses the noise of the input power supply and improves the purity of the power supply; the RY3408 chip, as an efficient DC-DC converter, can convert 5V voltage into 3.3V voltage with high conversion efficiency; the voltage divider filter submodule further smoothes the output voltage, ensures the stability and low ripple of the output voltage, and meets the power quality requirements of each module of the system.

[0041] The specific implementation mechanism is as follows: the 5V voltage is initially filtered by the capacitors C2-C4 and resistor R13 of the input filter submodule, and then input to the IN pin of the power conversion chip U4; the EN pin may be used for enable control; the switching circuit inside the chip converts the voltage to the required level; the SW pin outputs the switching signal, which is filtered by the inductor L1 and capacitors C5 and C6 of the voltage divider filter submodule, and the resistors R14 and R15 may be used for feedback control, and finally a stable 3.3V voltage output is obtained at both ends of the capacitor C6.

[0042] Preferably, Figure 8 As shown, a burning module is also included, specifically including a connector CN4, a screw SCREW1 and a screw SCREW2; Pin 1 of the connector CN4 is grounded; Pins 2 and 3 of the connector CN4 are electrically connected to pins PA13 and PA14 of the microcontroller U1 respectively; Pin 1 of the connector CN4 is connected to a 3.3V voltage; Screw SCREW1 and screw SCREW2 are used to fix the circuit board.

[0043] In the above solution, connector CN4 provides an interface with burning tools such as ST-Link, which is convenient for burning the program into the microcontroller U1; PA13 and PA14 pins are used as SWDIO and SWCLK, which are the debugging interfaces of the commonly used ARM Cortex-M core microcontroller; screws SCREW1 and SCREW2 provide a way to physically fix the circuit board, enhancing the reliability of the system.

[0044] The specific implementation method is: through the connector CN4, the burning tool such as ST-Link can be connected to the PA13 and PA14 pins of the microcontroller U1 to realize program downloading and debugging; pin 1 of the connector CN4 is grounded, and pin 4 provides power; screws SCREW1 and screws SCREW2 pass through the holes on the circuit board and are fixed to the body or other components.

[0045] Preferably, the microcontroller U1 is specifically a single chip microcomputer STM32G030F6P6.

[0046] In the above solution, the TM32G030F6P6 microcontroller is a high-performance, low-power, and feature-rich microcontroller that provides multiple low-power modes, such as sleep mode, low-power run mode, low-power sleep mode, stop mode, and standby mode, effectively extending battery life; it can meet the system's requirements for performance, power consumption, peripheral interfaces, power management, and development convenience.

[0047] Preferably, the signal conversion chip U2 is specifically a CH340X chip.

[0048] In the above solution, CH340X chip, as a widely used USB to serial port converter, has high compatibility and stability, can efficiently complete the signal conversion between USB protocol and UART protocol, and ensure the accurate transmission of data between MCU module and external USB device. Its mature technology and extensive application experience improve the reliability and compatibility of the system and reduce the development and maintenance costs.

[0049] Preferably, the YTC chip U3 is specifically a YTC-TC16S-128 chip.

[0050] In the above solution, the YTC-TC16S-128 chip has efficient power management and data transmission functions, and can stably handle the power and data requirements of the USB interface. Its multi-pin connection design enhances the system's interface redundancy and data transmission stability, improves the system's compatibility and reliability in different usage scenarios, and ensures the stable operation of the drone fireworks launch control system in various environments.

[0051] Preferably, the voltage regulator U5 is specifically a LDO linear voltage regulator of model 78L05.

[0052] In the above scheme, 78L05 can provide a very stable 5V output voltage, and can maintain high stability even when the input voltage changes or the load changes; the output voltage of 78L05 has a very low noise level and can provide clean and stable power to other circuit components.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A low-power UAV fireworks launch control system, characterized in that: It includes MCU module, signal conversion module, interface module, voltage stabilization module, voltage reduction module and drive output module; The interface module is electrically connected to the MCU module through the signal conversion module; the MCU module is electrically connected to the drive output module; the interface module is electrically connected to the step-down module through the voltage stabilizing module; the step-down module provides power to other modules; The MCU module is used to control the launch program of the drone fireworks and achieve low power consumption management through external interrupts; The signal conversion module is used to receive the external USB device signal of the interface module, realize the conversion from USB protocol to UART protocol, and transmit it to the MCU module; The drive output module is used to realize accurate emission control of fireworks according to the PWM signal output by the MCU module; The interface module is used to receive external USB device signals and access USB interface power; The voltage stabilizing module is used to convert the USB interface power supply into a 5V voltage; The step-down module is used to convert a 5V voltage into a stable 3.3V voltage.

2. A low-power consumption UAV fireworks launch control system according to claim 1, characterized in that: The MCU module includes a microcontroller U1, a resistor R1 and a resistor R2; The NRST pin of the microcontroller U1 is connected to a 3.3V voltage via a resistor R1; The PA14 pin of the microcontroller U1 is connected to a 3.3V voltage via a resistor R2; The PB3 pin and the PB7 pin of the microcontroller U1 are both electrically connected to the signal conversion module; The PA6 pin, PA7 pin and PB0 pin of the microcontroller U1 are all electrically connected to the drive output module; The PA2 pin of the microcontroller U1 is set to external interrupt mode.

3. A low-power consumption UAV fireworks launch control system according to claim 2, characterized in that: The signal conversion module includes a signal conversion chip U2, a resistor R3 and a capacitor C1; The VCC pin of the signal conversion chip U2 is connected to a 3V voltage and is grounded through a capacitor C1; The UD+ pin and the UD- pin of the signal conversion chip U2 are both electrically connected to the interface module; The TXD pin and the RXD pin of the signal conversion chip U2 are electrically connected to the PB3 pin and the PB7 pin of the microcontroller U1 respectively; The CTS pin and the DTR pin of the signal conversion chip U2 are electrically connected via a resistor R3.

4. A low-power consumption UAV fireworks launch control system according to claim 3, characterized in that: The driving output module includes a first driving submodule, a second driving submodule and a third driving submodule; The first driving submodule includes a MOS tube Q1, resistors R4 to R6, a connector CN1 and a light emitting diode D1; The positive electrode of the light emitting diode D1 is connected to a 3.3V voltage through a resistor R4, and the negative electrode of the light emitting diode D1 is electrically connected to one end of the connector CN1; The other end of the connector CN1 is connected to a 3.3V voltage; The gate of the MOS transistor Q1 is electrically connected to the PA6 pin of the microcontroller U1 through a resistor R5 and is electrically connected to the source of the MOS transistor Q1 through a resistor R6, and the source of the MOS transistor Q1 is grounded; The drain of the MOS tube Q1 is electrically connected to the cathode of the light emitting diode D1; The second driving submodule includes a MOS tube Q2, resistors R7 to R9, a connector CN2 and a light emitting diode D2; The positive electrode of the light emitting diode D2 is connected to a 3.3V voltage through a resistor R7, and the negative electrode of the light emitting diode D2 is electrically connected to one end of the connector CN2; The other end of the connector CN2 is connected to a 3.3V voltage; The gate of the MOS transistor Q2 is electrically connected to the PA7 pin of the microcontroller U1 through a resistor R8 and is electrically connected to the source of the MOS transistor Q2 through a resistor R9, and the source of the MOS transistor Q2 is grounded; The drain of the MOS tube Q2 is electrically connected to the cathode of the light emitting diode D2; The third driving submodule includes a MOS tube Q3, a resistor R10 to a resistor R12, a connector CN3 and a light emitting diode D3; The positive electrode of the light emitting diode D3 is connected to a 3.3V voltage through a resistor R10, and the negative electrode of the light emitting diode D3 is electrically connected to one end of the connector CN3; The other end of the connector CN3 is connected to a 3.3V voltage; The gate of the MOS transistor Q3 is electrically connected to the PB0 pin of the microcontroller U1 through a resistor R11 and is electrically connected to the source of the MOS transistor Q3 through a resistor R12, and the source of the MOS transistor Q3 is grounded; The drain of the MOS tube Q3 is electrically connected to the cathode of the light emitting diode D3.

5. A low-power consumption UAV fireworks launch control system according to claim 4, characterized in that: The interface module includes a YTC chip U3; The four VBUS pins of the YTC chip U3 are connected to the USB interface power supply; The four GND pins of the YTC chip U3 are grounded; The Dp1 pin and the Dn1 pin of the YTC chip U3 are electrically connected to the UD+ pin and the UD- pin of the signal conversion chip U2, respectively, or the Dp2 pin and the Dn2 pin of the YTC chip U3 are electrically connected to the UD+ pin and the UD- pin of the signal conversion chip U2, respectively.

6. A low-power consumption UAV fireworks launch control system according to claim 5, characterized in that: The voltage stabilization module includes a voltage stabilizer U5 and capacitors C7-C10; One end of the USB interface power input capacitor C7, one end of the capacitor C8 and the IN pin of the voltage regulator U5; The OUT pin of the voltage regulator U5 is electrically connected to one end of the capacitor C9 and one end of the capacitor C10, and outputs a 5V voltage; The other end of the capacitor C7, the other end of the capacitor C8, the other end of the capacitor C9, the other end of the capacitor C10 and the GND pin of the regulator U5 are all grounded.

7. A low-power consumption UAV fireworks launch control system according to claim 6, characterized in that: The step-down module includes an input filter submodule, a power conversion submodule and a voltage divider filter submodule; wherein: The input filter submodule includes capacitors C2-C4 and a resistor R13; One end of capacitor C2, one end of capacitor C3 and one end of resistor R13 are all connected to a 5V voltage; The other end of capacitor C2, the other end of capacitor C3 and one end of capacitor C4 are all grounded; The other end of the capacitor C4 is electrically connected to the other end of the resistor R13; The two ends of the resistor R13 are respectively connected to the two input ends of the power conversion submodule; The power conversion submodule includes a power conversion chip U4; The two ends of the resistor R13 are electrically connected to the IN pin and the EN pin of the power conversion chip U4 respectively; The SW pin and the FB pin of the power conversion chip U4 are both electrically connected to the output filter submodule; The output filter submodule includes an inductor L1, a resistor R14, a resistor R15, a capacitor C5 and a capacitor C6; The SW pin of the power conversion chip U4 is electrically connected to one end of the inductor L1; The other end of the inductor L1 is electrically connected to one end of the resistor R14, one end of the capacitor C5 and one end of the capacitor C6; The FB pin of the power conversion chip U4 is electrically connected to the other end of the resistor R14 and one end of the resistor R15; the other end of the resistor R15 is electrically connected to the other end of the capacitor C5 and the other end of the capacitor C6; and both ends of the capacitor C6 output a 3.3V voltage.

8. A low-power consumption UAV fireworks launch control system according to claim 2, characterized in that: It also includes a burning module, specifically including connector CN4, screw SCREW1 and screw SCREW2; Pin 1 of the connector CN4 is grounded; Pins 2 and 3 of the connector CN4 are electrically connected to pins PA13 and PA14 of the microcontroller U1 respectively; Pin 1 of the connector CN4 is connected to a 3.3V voltage; Screw SCREW1 and screw SCREW2 are used to fix the circuit board.

9. A low-power consumption UAV fireworks launch control system according to claim 7, characterized in that: The microcontroller U1 is specifically a single-chip microcomputer STM32G030F6P6; the signal conversion chip U2 is specifically a CH340X chip; the YTC chip U3 is specifically a YTC-TC16S-128 chip; and the voltage regulator U5 is specifically a LDO linear voltage regulator of model 78L05.

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