Electronic speed regulation controller powered by ignition system

Abstract

The invention provides an electronic speed regulation controller powered by an ignition system, which comprises a phase rotating speed detection unit, an ignition power generation and speed regulation control unit, a voltage-stabilized power supply unit and a motor driving unit, the ignition power generation and speed regulation control unit outputs a closing signal to the ignition system to stop ignition and outputs a power supply signal to the stabilized voltage supply unit, electric energy of the ignition system is stored through a capacitor in the controller to supply power, and meanwhile the motor driving unit is controlled to work to achieve the engine speed regulation function; and when the phase rotating speed detection unit detects an ignition waveform induced by the primary coil of the ignition system, the ignition power generation and speed regulation control unit outputs an ignition signal to the external ignition system to enable the engine to work normally, and outputs a closing signal to the stabilized voltage supply unit to stop supplying power to the controller. A primary coil of an external ignition system is used as a power generation coil to obtain power supply.

Description

Technical Field

[0001] The present invention relates to the technical field of general power systems, and in particular to an electronic speed control controller powered by an ignition system. Background Art

[0002] The core function of an electronic speed controller is to control motor speed. By adjusting the throttle opening of the power system through the motor, the electronic speed controller can automatically adjust the speed to meet the needs of different application scenarios. Electronic speed controllers are widely used in various equipment that require precise speed control, such as generators, water pumps, high-pressure cleaners, agricultural machinery, snow blowers, etc. They ensure stable operation at the set speed, improving work efficiency and equipment life.

[0003] Currently, electronic speed controllers used in general-purpose power systems, such as engines, primarily draw their power from batteries or generator coils. However, the inventors discovered that both batteries and generator coils need to be purchased and installed separately, which is not only costly and complex, but also increases the weight of the engine. Summary of the Invention

[0004] In view of the technical problem that the power supply of the electronic speed controller in existing general power systems such as engines mainly comes from batteries or generator coils, both batteries and generator coils need to be purchased and installed separately, which is not only costly and complex in process, but also increases the weight of the engine. The present invention provides an electronic speed controller powered by an ignition system.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An electronic speed controller powered by an ignition system, comprising a phase speed detection unit, an ignition power generation and speed regulation control unit, a voltage-stabilized power supply unit, and a motor drive unit;

[0007] The phase speed detection unit is used to output a shutdown signal to the external ignition system when it detects that the current waveform induced by the primary coil of the external ignition system is a power generation waveform, so that the external ignition system is in a stopped ignition state. At this time, the ignition power generation and speed regulation control unit outputs a power supply signal to the voltage-stabilized power supply unit, and the electric energy of the external ignition system is supplied to the controller through the internal capacitor energy storage of the controller; at the same time, the ignition power generation and speed regulation control unit controls the operation of the motor drive unit to realize the engine speed regulation function; and

[0008] The phase speed detection unit is used to output an ignition signal to the external ignition system when it detects that the current waveform induced by the primary coil of the external ignition system is an ignition waveform, so that the engine can work normally. At this time, the ignition power generation and speed regulation control unit outputs a shutdown signal to the voltage-stabilized power supply unit, and the external ignition system stops supplying power to the controller. The power supply of the controller is maintained by the energy storage capacitor inside the controller.

[0009] Compared with the prior art, the electronic speed controller provided by the present invention, which is powered by the ignition system, utilizes the primary coil of the external ignition system as a generator coil to output alternating current to the electronic speed controller of the present invention, and realizes ignition and power generation control through phase recognition, so that the ignition system has the function of normal ignition, and at the same time realizes the function of the generator coil to convert mechanical energy into electrical energy. Therefore, there is no need to install a separate battery or generator coil on the engine to power the electronic speed controller, thereby reducing costs and reducing engine weight.

[0010] Furthermore, the phase and speed detection unit includes a diode D7, a resistor R14, resistors R15 and R16, capacitors C7 and C8, a Zener diode DW2, and an NMOS transistor Q5. The anode of the diode D7 is connected to the positive end of the primary coil of the external ignition system, and the cathode of the diode D7 is connected to one end of the resistor R16, one end of the capacitor C7, the cathode of the Zener diode DW2, and the gate of the NMOS transistor Q5 via the resistor R15. The other end of the resistor R16, the other end of the capacitor C7, the anode of the Zener diode DW2, the source of the NMOS transistor Q5, and one end of the capacitor C8 are all grounded. The drain of the NMOS transistor Q5 is connected to one end of the resistor R14, the other end of the capacitor C8, and the ignition power generation and speed regulation control unit. The other end of the resistor R14 is connected to the power supply VCC.

[0011] Furthermore, the ignition power generation and speed regulation control unit includes a microprocessor U2, a resistor R11, resistors R12 and R13, capacitors C13 to C19, capacitor C28 and a crystal oscillator X1. The second pin of the microprocessor U2 is connected to the voltage-stabilized power supply unit, the third pin is connected to the resistor R11, the resistor R13 and one end of the capacitor C11, the other end of the resistor R13 and the capacitor C11 is grounded, the other end of the resistor R11 is connected to the resistor R12, the capacitor C14, one end of the capacitor C15 and the power supply VCC and the ninth pin of the microprocessor U2, the other end of the resistor R12 is connected to one end of the capacitor C28 and the fourth pin of the microprocessor U2, and the The other end of capacitor C28 is grounded and connected to the other end of capacitor C14 and capacitor C15, one end of capacitor C16 and capacitor C17, and pin 7 of the microprocessor U2. The other end of capacitor C16 and capacitor C17 is connected to pin 8 of the microprocessor U2. Pin 10 of the microprocessor U2 is connected to the phase and speed detection unit. Pin 11 of the microprocessor U2 is connected to capacitor C18 and one end of the crystal oscillator X1. Pin 12 of the microprocessor U2 is connected to the other end of the crystal oscillator X1 and one end of capacitor C19. The other end of capacitor C18 and capacitor C19 is grounded. Pins 13 to 16 of the microprocessor U2 are connected to the motor drive unit.

[0012] Furthermore, the voltage-stabilized power supply unit includes common cathode diodes D1 and D5, diodes D2 to D4, diode D6, resistors R1 to R10, transistors Q1 and Q4, unidirectional thyristors Q2 and Q3, capacitors C1 to C6, a voltage-stabilizing diode DW1, and a voltage regulator U1. One anode of the common cathode diode D1, the cathode of the diode D3, and the anode of the unidirectional thyristor Q2 are connected to the positive end of the primary coil of the external ignition system, and the other anode of the common cathode diode D1, the cathode of the diode D2, and the anode of the unidirectional thyristor Q3 are connected to the negative end of the primary coil of the external ignition system. The cathode of the common cathode diode D1 is connected to the collector of the transistor Q1 and one end of the resistor R1, the base of the transistor Q1 and the other end of the resistor R1 are connected to one end of the resistor R6, the other end of the resistor R6 is connected to the collector of the transistor Q4, the emitter of the transistor Q4 is grounded and connected to one end of the resistor R7, the base of the transistor Q4 and the other end of the resistor R7 are connected to one end of the resistor R8, the other end of the resistor R8 is connected to the cathode of the common cathode diode D5, one anode of the common cathode diode D5 is connected to the ignition power generation and speed control The unit is connected, the other anode of the common cathode diode D5 is connected to the anode of the Zener diode DW1, the cathode of the Zener diode DW1 is connected to the resistor R9, the resistor R10 and one end of the capacitor C4, the other end of the resistor R9 is connected to the 12V power supply and is connected to the capacitor C3, the capacitor C2, the capacitor C1, the resistor R3, one end of the resistor R5 and the anode of the diode D6, the cathode of the unidirectional thyristor Q2 and Q3, the control electrode of the unidirectional thyristor Q3 is connected to one end of the resistor R4 and the other end of the capacitor C2 and the resistor R5, the other end of the resistor R4 is connected to the resistor R2 and the cathode of the diode D4, the anode of the diode D4 is connected to the emitter of the transistor Q1, the other end of the resistor R2 is connected to the capacitor C1 and the other end of the resistor R3 and the control electrode of the unidirectional thyristor Q2, the cathode of the diode D6 is connected to one end of the capacitor C5 and the input end of the voltage regulator U1, the output end of the voltage regulator U1 is connected to one end of the capacitor C6 and provides direct current to the outside, and the ground end of the voltage regulator U1 and the other ends of the capacitor C6, capacitor C5, capacitor C4, resistor R10, capacitor C3 and the anodes of the diodes D2 and D3 are all grounded.

[0013] Furthermore, the motor drive unit includes a microprocessor U3 and capacitors C9 to C12. Pins 2, 3, 6 and 7 of the microprocessor U3 are connected to the ignition power generation and speed regulation control unit, pin 4 is connected to one end of capacitor C9 and capacitor C10 and a 12V power supply, the other ends of capacitors C9 and C10 are grounded, pin 9 is connected to pin 12 through capacitor C12, pins 10 and 11 are grounded, pin 13 is connected to pin 16 through capacitor C11, and pins 14 and 15 are grounded. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention provides a circuit diagram of an electronic speed control controller powered by an ignition system.

[0015] Figure 2 It is a schematic diagram of the power supply scheme structure of the ignition system involved in the present invention.

[0016] Figure 3 It is a schematic diagram of two waveforms with opposite phases induced by the primary coil inside the igniter in the ignition system involved in the present invention.

[0017] Figure 4 1 is a circuit diagram of the ignition system involved in the present invention.

[0018] Figure 5 It is a schematic diagram of the power supply scheme structure of the ignition system involved in the prior art.

[0019] In the figure, 1. Phase and speed detection unit; 2. Ignition power generation and speed regulation control unit; 3. Voltage-stabilized power supply unit; 4. Motor drive unit; 5. Flywheel; 51. First outer magnetic tile; 52. Second outer magnetic tile; 53. First inner magnetic tile; 54. Second inner magnetic tile; 55. Power generation coil; 6. Ignition; 61. Signal detection unit; 62. Ignition control unit; 7. Power generation waveform; 8. Ignition waveform. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] Please refer to Figure 1 As shown, the present invention provides an electronic speed controller powered by an ignition system, comprising a phase speed detection unit 1, an ignition power generation and speed regulation control unit 2, a voltage-stabilized power supply unit 3 and a motor drive unit 4;

[0024] The phase speed detection unit 1 is used to output a shutdown signal to the external ignition system when it detects that the current waveform induced by the primary coil of the external ignition system is a power generation waveform, so that the external ignition system is in a stopped ignition state. At this time, the ignition power generation and speed regulation control unit 2 outputs a power supply signal to the voltage-stabilized power supply unit 3, and the electric energy of the external ignition system is supplied to the controller through the internal capacitor energy storage of the controller (electronic speed controller); at the same time, the ignition power generation and speed regulation control unit 2 controls the motor drive unit 4 to operate, thereby realizing the engine speed regulation function; and,

[0025] The phase speed detection unit 1 is used to output an ignition signal to the external ignition system when it detects that the current waveform induced by the primary coil of the external ignition system is an ignition waveform, so that the engine can operate normally. At this time, the ignition power generation and speed regulation control unit 2 outputs a shutdown signal to the voltage-stabilized power supply unit 3, and the external ignition system stops supplying power to the controller (electronic speed controller). The power supply of the controller is maintained by the energy storage capacitor inside the controller.

[0026] Compared with the prior art, the electronic speed controller provided by the present invention, which is powered by the ignition system, utilizes the primary coil of the external ignition system as a generator coil to output alternating current to the electronic speed controller of the present invention, and realizes ignition and power generation control through phase recognition, so that the ignition system has the function of normal ignition, and at the same time realizes the function of the generator coil to convert mechanical energy into electrical energy. Therefore, there is no need to install a separate battery or generator coil on the engine to power the electronic speed controller, thereby reducing costs and reducing engine weight.

[0027] As a specific example, please refer to Figures 2 to 4As shown, the external ignition system involved in the present invention includes a flywheel 5 and an igniter 6, the igniter 6 includes a primary coil L1, a secondary coil L2, a signal detection unit 61 and an ignition control unit 62, and two external magnetic tiles (a first external magnetic tile 51 and a second external magnetic tile 52) are arranged at intervals on the outside of the flywheel 5, one external magnetic tile (the second external magnetic tile 52) is already on the outside of the original flywheel 5, and the other external magnetic tile (the first external magnetic tile 51) is newly added to the outside of the flywheel 5, and the polarities of the outer surfaces of the two external magnetic tiles are opposite;

[0028] The primary coil L1 inside the igniter 6 also serves as a generating coil. When the flywheel 5 rotates and the two outer magnetic tiles pass through the igniter 6, the primary coil L1 induces two waveforms with opposite phases for each rotation. One waveform is the generating waveform for power generation, and the other waveform is the ignition waveform for ignition.

[0029] The signal detection unit 61 and the ignition control unit 62 are arranged on the igniter 6. The signal detection unit 61 is used to detect the ignition signal output by the electronic speed control controller of the present invention when the current waveform sensed by the primary coil L1 is an ignition waveform. The signal detection unit 61 does not control the ignition control unit 62. The ignition control unit 62 itself controls the on and off of the primary coil L1 to generate high voltage on the secondary coil L2 to achieve ignition; and is used to detect the shutdown signal output by the electronic speed control controller of the present invention when the current waveform sensed by the primary coil L1 is a power generation waveform. The signal detection unit 61 causes the ignition control unit 62 to enter a closed state. At this time, the primary coil L1 is used as a power generation coil to provide alternating current to the electronic speed control controller of the present invention.

[0030] The external ignition system involved in the present invention arranges two external magnetic tiles at intervals outside the flywheel, so that the ignition system can be used for both ignition and external power generation. Specifically, the primary coil inside the igniter is used as a generator coil to output alternating current to the outside, and ignition and power generation control is achieved through phase recognition, so that the ignition system has the function of normal ignition and the function of the generator coil at the same time. This can save the generator coil in the existing solution and a pair of magnetic tiles inside the flywheel, greatly reducing the cost of the whole machine, reducing the assembly process of the generator coil, simplifying the assembly process of the whole machine, reducing failure points, greatly improving the quality level of the whole machine, and making the whole machine lightweight.

[0031] As a specific example, please refer to Figure 5As shown, the existing power supply solution for the ignition system in a general-purpose power system involves embedding a first inner magnetic tile 53 and a second inner magnetic tile 54 within the general-purpose engine's flywheel 5. At the same time, at least one independent generator coil 55 is installed within the flywheel 5. When the flywheel 5 rotates, the generator coil 55 generates an induced electromotive force, which is rectified and then supplied to the rear end. This solution requires not only the independent generator coil 55 but also at least one pair of inner magnetic tiles (the first inner magnetic tile 53 and the second inner magnetic tile 54) within the flywheel 5. This solution is costly, complex in assembly, and presents numerous potential failure points.

[0032] As a specific example, please refer to Figure 2 As shown, in the external ignition system, two outer magnetic tiles, namely the first outer magnetic tile 51 and the second outer magnetic tile 52, are arranged opposite to each other outside the flywheel 5, thereby improving the stability of the flywheel 5 when rotating.

[0033] As a specific example, please refer to Figure 2 and Figure 3 As shown, the polarity of the outer surface of the newly added outer magnetic tile, i.e., the first outer magnetic tile 51, in the external ignition system is S-pole. When the newly added outer magnetic tile passes through the igniter 6, the waveform induced by the primary coil L1 is the power generation waveform 7, which is used for power generation; the polarity of the outer surface of the existing outer magnetic tile, i.e., the second outer magnetic tile 52, is N-pole. When the existing outer magnetic tile passes through the igniter 6, the waveform induced by the primary coil L1 is the ignition waveform 8, which is used for ignition by the igniter. Of course, those skilled in the art can also swap the polarity of the outer surfaces of the first outer magnetic tile 51 and the second outer magnetic tile 52 on the basis of the aforementioned embodiments, that is, set the polarity of the outer surface of the first outer magnetic tile 51 to N-pole and set the polarity of the outer surface of the second outer magnetic tile 52 to S-pole. Thus, when the flywheel 5 rotates and the two outer magnetic tiles pass through the igniter 6, the primary coil L1 can also induce two waveforms with opposite phases for each rotation. At this time, the waveform diagram only needs to be replaced Figure 3 Just swap the two waveforms in .

[0034] As a specific embodiment, the circuit of the signal detection unit 61 in the external ignition system is as follows: Figure 4 As shown, the specific working process of the signal detection unit 61 is as follows: when the ignition signal output by the electronic speed controller of the present invention is detected, the optical coupler U1 is turned off, and the signal detection unit 61 does not control the ignition control unit 62. The ignition control unit 62 itself controls the on and off of the primary coil L1 to generate high voltage on the secondary coil L2 to achieve ignition; when the shutdown signal output by the electronic speed controller of the present invention is detected, the optical coupler U1 is turned on, and the signal detection unit 61 causes the ignition control unit 62 to enter the shutdown state. At this time, the primary coil L1 is used as a generating coil to provide external AC power. Figure 3It can be seen from the waveform diagram shown that within the complete cycle of one rotation of the flywheel 5, only one positive cycle appears in the power generation waveform, while two positive cycles appear in the ignition waveform. Therefore, the interval time between the two positive cycles can be used to determine whether the current waveform is an ignition waveform or a power generation waveform, so as to output an ignition signal or a shutdown signal accordingly.

[0035] As a specific embodiment, the circuit of the ignition control unit 62 in the external ignition system is as follows: Figure 4 As shown, the specific working process of the ignition control unit 62 is as follows: when the optical coupler U1 in the signal detection unit 61 is cut off, when the negative wave of the ignition waveform arrives, the transistor Q2 cannot be turned on before Q3 due to the voltage divider effect of the resistors R1 and R2. After the transistor Q3 is turned on, Q4 and Q5 are turned on, and the ignition unit charges the primary coil L1 through the transistor Q5 and the resistor R6 to store energy; the voltage drop across the resistor R6 increases with the increase of current. When the voltage drop across the resistor R6 is greater than the voltage drop of the capacitor C1 by more than 0.7V, the transistor Q1 is turned on to charge the capacitor C1, the transistor Q2 is cut off, and the voltage on the capacitor C1 increases with the rise of the pulse front edge. After the induced electromotive force reaches the pulse peak, The base voltage of transistor Q1 is lower than the voltage on capacitor C1, and transistor Q1 is turned off. At this time, the voltage on resistor R2 increases, causing transistor Q2 to turn on. After transistor Q2 is turned on, Q3, Q4, and Q5 are turned off. At this time, due to the sudden change in current, the primary coil L1 self-induces a voltage of several hundred volts, causing high voltage to be generated on the secondary coil L2 to achieve ignition; when the optical coupler U1 in the signal detection unit 61 is turned on, transistors Q3, Q4, and Q5 are turned off, the primary coil L1 is always in an open circuit state, and no high voltage is generated in the secondary coil L2, thereby achieving the ignition shutdown function. At this time, the primary coil L1 is used as a generating coil to provide AC power to the electronic speed controller of the present invention.

[0036] As a specific example, please refer to Figure 1As shown, the phase and speed detection unit 1 includes a diode D7, a resistor R14, resistors R15 and R16, capacitors C7 and C8, a Zener diode DW2, and an NMOS transistor Q5. The anode of the diode D7 is connected to the positive terminal AC1 of the primary coil of the external ignition system. The cathode of the diode D7 is connected to one end of the resistor R16, one end of the capacitor C7, the cathode of the Zener diode DW2, and the gate of the NMOS transistor Q5 via the resistor R15. The other end of the resistor R16, the other end of the capacitor C7, the anode of the Zener diode DW2, the source of the NMOS transistor Q5, and one end of the capacitor C8 are all grounded. The drain of the NMOS transistor Q5 is connected to one end of the resistor R14, the other end of the capacitor C8, and the ignition power generation and speed regulation control unit. The other end of the resistor R14 is connected to the power supply VCC. The phase speed detection unit 1 provided in this embodiment, when the current waveform sensed by the primary coil of the external ignition system is in a positive cycle, the diode D7 and the NMOS tube Q5 are turned on in sequence, and the phase speed detection unit 1 outputs a low level to the ignition power generation and speed regulation control unit 2, and the Figure 3 As can be seen from the waveform diagram shown, within a complete cycle of one rotation of the flywheel 5, only one positive cycle appears in the power generation waveform, while two positive cycles appear in the ignition waveform. Therefore, it can be determined whether the current waveform is a power generation waveform or an ignition waveform based on the interval time between the two positive cycles.

[0037] As a specific example, please refer to Figure 1As shown, the ignition power generation and speed regulation control unit 2 includes a microprocessor U2, a resistor R11, resistors R12 and R13, capacitors C13 to C19, a capacitor C28 and a crystal oscillator X1, the second pin of the microprocessor U2 is connected to the voltage-stabilized power supply unit, the third pin is connected to the resistor R11, the resistor R13 and one end of the capacitor C11, the other end of the resistor R13 and the capacitor C11 is grounded, the other end of the resistor R11 is connected to the resistor R12, the capacitor C14, one end of the capacitor C15 and the power supply VCC and the ninth pin of the microprocessor U2, the other end of the resistor R12 is connected to one end of the capacitor C28 and the fourth pin of the microprocessor U2, the other end of the capacitor C28 is grounded and connected to the capacitor C14 and The other end of capacitor C15, one end of capacitor C16 and capacitor C17 and pin 7 of microprocessor U2 are connected, the other ends of capacitor C16 and capacitor C17 are connected to pin 8 of microprocessor U2, pin 10 of microprocessor U2 is connected to phase speed detection unit, pin 11 of microprocessor U2 is connected to capacitor C18 and one end of crystal oscillator X1, pin 12 of microprocessor U2 is connected to the other end of crystal oscillator X1 and one end of capacitor C19, the other ends of capacitor C18 and capacitor C19 are grounded, pins 13 to 16 of microprocessor U2 are connected to motor drive unit, and microprocessor U2 can be specifically implemented using existing model HC32L021C8PA chip. The ignition power generation and speed regulation control unit 2 provided in this embodiment, if a large interval is detected between two consecutive falling edges within a complete cycle of the current waveform, determines that the upcoming waveform is an ignition waveform. At this time, a low-level signal is output to the external ignition system via pin 1, causing the ignition system to ignite normally, and a high-level signal is output via pin 2 to shut down the voltage-regulated power supply unit 3. The external ignition system stops supplying power to the electronic speed controller of the present invention, and the controller's power supply is maintained by the energy storage capacitor within the controller. If a small interval is detected between two consecutive falling edges, the upcoming waveform is determined to be a power generation waveform. At this time, a high-level signal is output to the external ignition system via pin 1 to shut down the ignition system, and a low-level signal is output via pin 2 to control the normal operation of the voltage-regulated power supply unit 3. The electrical energy of the external ignition system is supplied to the controller through the internal capacitor energy storage of the electronic speed controller of the present invention, and PWM (Pulse Width Modulation) signals are output via pins 13 to 16 to control the normal operation of the motor drive unit 4, thereby realizing the automatic speed regulation function of the engine.

[0038] As a specific example, please refer to Figure 1As shown, the voltage-stabilized power supply unit 3 includes common-cathode diodes D1 and D5, diodes D2 to D4, a diode D6, resistors R1 to R10, transistors Q1 and Q4, unidirectional thyristors Q2 and Q3, capacitors C1 to C6, a voltage-stabilizing diode DW1, and a voltage regulator U1. One anode of the common-cathode diode D1, the cathode of the diode D3, and the anode of the unidirectional thyristor Q2 are connected to the positive terminal AC1 of the primary coil of the external ignition system. The other anode of the common-cathode diode D1, the cathode of the diode D2, and the anode of the unidirectional thyristor Q3 are connected to the negative terminal AC2 of the primary coil of the external ignition system. The power inputs AC1 and AC2 are AC power provided to both ends of the primary coil L1 of the external ignition system. The cathode of the common cathode diode D1 is connected to the collector of the transistor Q1 and one end of the resistor R1. The base of the transistor Q1 and the other end of the resistor R1 are connected to one end of the resistor R6. The other end of the resistor R6 is connected to the collector of the transistor Q4. The emitter of the transistor Q4 is grounded and connected to one end of the resistor R7. The base of the transistor Q4 and the other end of the resistor R7 are connected to one end of the resistor R8. The other end of the resistor R8 is connected to the cathode of the common cathode diode D5. One anode of the diode D5 is connected to the ignition power generation and speed control unit, the other anode of the common cathode diode D5 is connected to the anode of the voltage regulator diode DW1, the cathode of the voltage regulator diode DW1 is connected to the resistor R9, the resistor R10 and one end of the capacitor C4, the other end of the resistor R9 is connected to the 12V power supply and is connected to the capacitor C3, the capacitor C2, the capacitor C1, the resistor R3, one end of the resistor R5 and the anode of the diode D6, the cathode of the unidirectional thyristor Q2 and Q3, the control electrode of the unidirectional thyristor Q3 is connected to one end of the resistor R4 and the other end of the capacitor C2 and the resistor R5, the resistor R The other end of 4 is connected to one end of the resistor R2 and the cathode of the diode D4. The anode of the diode D4 is connected to the emitter of the transistor Q1. The other end of the resistor R2 is connected to the capacitor C1 and the other end of the resistor R3 and the control electrode of the unidirectional thyristor Q2. The cathode of the diode D6 is connected to one end of the capacitor C5 and the input end of the voltage regulator U1. The output end of the voltage regulator U1 is connected to one end of the capacitor C6 and provides direct current to the outside. The ground end of the voltage regulator U1 and the other ends of the capacitors C6, C5, C4, resistor R10, capacitor C3 and the anodes of the diodes D2 and D3 are all grounded.The voltage-stabilized power supply unit 3 provided in this embodiment, upon receiving a low-level signal output from pin 2 of the ignition power generation and speed regulation control unit 2, turns off the common cathode diode D5, turns off the transistor Q4, and turns on the components D1, Q1, D2, Q2, Q3, and D2 / D3. At this point, the primary coil L1 can function as a generator coil, outputting an AC signal to the voltage-stabilized power supply unit 3. The power from the external ignition system flows through Q2, Q3, and D3 / D2, storing energy in capacitor C3 to power the electronic speed controller. Meanwhile, DC power can be supplied externally through the voltage-stabilized power supply unit 3. Upon receiving a high-level signal output from pin 2 of the ignition power generation and speed regulation control unit 2, the common cathode diode D5 turns on, and the voltage divider resistors R7 and R8 turn on transistor Q4, turning off Q1, Q2, and Q3. At this point, the primary coil L1 stops supplying an AC signal to the voltage-stabilized power supply unit 3, and the external ignition system stops powering the electronic speed controller. The controller's power is maintained by the energy storage capacitor C3.

[0039] As a specific example, please refer to Figure 1 As shown, the motor drive unit 4 includes a microprocessor U3 and capacitors C9 to C12. Pins 2, 3, 6, and 7 of the microprocessor U3 are connected to the ignition power generation and speed regulation control unit. Pin 4 is connected to one end of capacitors C9 and C10 and a 12V power supply. The other ends of capacitors C9 and C10 are grounded. Pin 9 is connected to pin 12 via capacitor C12, pins 10 and 11 are grounded, pin 13 is connected to pin 16 via capacitor C11, and pins 14 and 15 are grounded. The microprocessor U3 can be implemented using a chip with the existing model MX500HD. The motor drive unit 4 provided in this embodiment, after receiving the PWM signal output by pins 13 to 16 of the ignition power generation and speed regulation control unit 2, controls the throttle opening through the motor to achieve the engine automatic speed regulation function.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An electronic speed controller powered by an ignition system, characterized in that: It includes a phase speed detection unit, an ignition power generation and speed regulation control unit, a voltage regulated power supply unit and a motor drive unit; The phase speed detection unit is used to output a shutdown signal to the external ignition system when it detects that the current waveform induced by the primary coil of the external ignition system is a power generation waveform, so that the external ignition system is in a stopped ignition state. At this time, the ignition power generation and speed regulation control unit outputs a power supply signal to the voltage-stabilized power supply unit, and the electric energy of the external ignition system is supplied to the controller through the internal capacitor energy storage of the controller; at the same time, the ignition power generation and speed regulation control unit controls the operation of the motor drive unit to realize the engine speed regulation function; and The phase speed detection unit is used to output an ignition signal to the external ignition system when it detects that the current waveform induced by the primary coil of the external ignition system is an ignition waveform, so that the engine can work normally. At this time, the ignition power generation and speed regulation control unit outputs a shutdown signal to the voltage-stabilized power supply unit, and the ignition system stops supplying power to the controller. The power supply of the controller is maintained by the energy storage capacitor inside the controller.

2. The electronic speed controller powered by the ignition system according to claim 1, characterized in that: The phase and speed detection unit includes a diode D7, a resistor R14, resistors R15 and R16, capacitors C7 and C8, a Zener diode DW2, and an NMOS transistor Q5. The anode of the diode D7 is connected to the positive end of the primary coil of the external ignition system, and the cathode of the diode D7 is connected to one end of the resistor R16, one end of the capacitor C7, the cathode of the Zener diode DW2, and the gate of the NMOS transistor Q5 via the resistor R15. The other end of the resistor R16, the other end of the capacitor C7, the anode of the Zener diode DW2, the source of the NMOS transistor Q5, and one end of the capacitor C8 are all grounded. The drain of the NMOS transistor Q5 is connected to one end of the resistor R14, the other end of the capacitor C8, and the ignition power generation and speed regulation control unit. The other end of the resistor R14 is connected to the power supply VCC.

3. The electronic speed controller powered by the ignition system according to claim 1, characterized in that: The ignition power generation and speed regulation control unit includes a microprocessor U2, a resistor R11, resistors R12 and R13, capacitors C13 to C19, capacitor C28 and a crystal oscillator X1. The second pin of the microprocessor U2 is connected to the voltage-stabilized power supply unit, the third pin is connected to the resistor R11, the resistor R13 and one end of the capacitor C11, the other end of the resistor R13 and the capacitor C11 is grounded, the other end of the resistor R11 is connected to the resistor R12, the capacitor C14, one end of the capacitor C15 and the power supply VCC and the ninth pin of the microprocessor U2, the other end of the resistor R12 is connected to one end of the capacitor C28 and the fourth pin of the microprocessor U2, and the capacitor C The other end of 28 is grounded and connected to the other end of capacitor C14 and capacitor C15, one end of capacitor C16 and capacitor C17 and pin 7 of the microprocessor U2, the other end of the capacitor C16 and capacitor C17 is connected to pin 8 of the microprocessor U2, the 10th pin of the microprocessor U2 is connected to the phase and speed detection unit, the 11th pin of the microprocessor U2 is connected to capacitor C18 and one end of the crystal oscillator X1, the 12th pin of the microprocessor U2 is connected to the other end of the crystal oscillator X1 and one end of the capacitor C19, the other end of the capacitor C18 and capacitor C19 is grounded, and pins 13 to 16 of the microprocessor U2 are connected to the motor drive unit.

4. The electronic speed controller powered by the ignition system according to claim 1, characterized in that: The voltage-stabilized power supply unit includes common-cathode diodes D1 and D5, diodes D2 to D4, diode D6, resistors R1 to R10, transistors Q1 and Q4, unidirectional thyristors Q2 and Q3, capacitors C1 to C6, a voltage-stabilizing diode DW1, and a voltage regulator U1. One anode of the common-cathode diode D1, the cathode of the diode D3, and the anode of the unidirectional thyristor Q2 are connected to the positive end of the primary coil of the external ignition system. The other anode of the common-cathode diode D1, the cathode of the diode D2, and the anode of the unidirectional thyristor Q3 are connected to the negative end of the primary coil of the external ignition system. The cathode of the common cathode diode D1 is connected to the collector of the transistor Q1 and one end of the resistor R1, the base of the transistor Q1 and the other end of the resistor R1 are connected to one end of the resistor R6, the other end of the resistor R6 is connected to the collector of the transistor Q4, the emitter of the transistor Q4 is grounded and connected to one end of the resistor R7, the base of the transistor Q4 and the other end of the resistor R7 are connected to one end of the resistor R8, the other end of the resistor R8 is connected to the cathode of the common cathode diode D5, and one anode of the common cathode diode D5 is connected to the ignition power generation and speed regulation control unit. The other anode of the common cathode diode D5 is connected to the anode of the Zener diode DW1, the cathode of the Zener diode DW1 is connected to the resistor R9, the resistor R10 and one end of the capacitor C4, the other end of the resistor R9 is connected to the 12V power supply and is connected to the capacitor C3, the capacitor C2, the capacitor C1, the resistor R3, one end of the resistor R5 and the anode of the diode D6, the cathode of the unidirectional thyristor Q2 and Q3, the control electrode of the unidirectional thyristor Q3 is connected to one end of the resistor R4 and the other end of the capacitor C2 and the resistor R5, the other end of the resistor R4 is connected to the One end of the voltage regulator U1 is connected to the cathode of the diode D4, the anode of the diode D4 is connected to the emitter of the transistor Q1, the other end of the resistor R2 is connected to the capacitor C1 and the other end of the resistor R3 and the control electrode of the unidirectional thyristor Q2, the cathode of the diode D6 is connected to one end of the capacitor C5 and the input end of the voltage regulator U1, the output end of the voltage regulator U1 is connected to one end of the capacitor C6 and provides direct current to the outside, and the ground end of the voltage regulator U1 and the other end of the capacitor C6, capacitor C5, capacitor C4, resistor R10, capacitor C3 and the anodes of the diodes D2 and D3 are all grounded.

5. The electronic speed controller powered by the ignition system according to claim 1, characterized in that: The motor drive unit includes a microprocessor U3 and capacitors C9 to C12. Pins 2, 3, 6 and 7 of the microprocessor U3 are connected to the ignition power generation and speed regulation control unit, pin 4 is connected to one end of capacitor C9 and capacitor C10 and a 12V power supply, the other ends of capacitors C9 and C10 are grounded, pin 9 is connected to pin 12 through capacitor C12, pins 10 and 11 are grounded, pin 13 is connected to pin 16 through capacitor C11, and pins 14 and 15 are grounded.

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