A low power module for a genset

Abstract

The utility model relates to a kind of low-power module for generating set, including detection circuit, power supply circuit, power control circuit, drive control circuit, rotating speed acquisition circuit, low dropout regulator and single-chip microcontroller.Detection circuit is used to identify power switch state, power supply circuit is responsible to the power supply introduction to module interior, power control circuit controls entire power supply passway by MOS tube;Drive control circuit is with MOS array drive electrical appliance load;Rotating speed acquisition circuit converts high voltage bag negative wave into pulse signal using photoelectric coupler;Single-chip microcontroller is as control core, realizes logic judgment and switch execution.A kind of low-power module for generating set using the utility model design, can solve the problem that ordinary generating set with battery is activated generating set operation complex under low-power mode, increase the cost of unit, lead to the use and popularization of generating set are limited.

Description

Technical Field

[0001] This utility model relates to the field of power generation equipment technology, specifically to a low-power module for generator sets. Background Technology

[0002] Currently, small and medium-sized generator sets have a huge market demand due to their convenience, serving as backup power for households experiencing power shortages and for outdoor camping. However, most ordinary battery-powered generator sets on the market lack a low-power design suitable for actual use in the standby state. In low-power mode, their power consumption is not truly low, and over time, the battery can easily be completely drained, preventing the generator from starting. Furthermore, in current low-power mode, most units require a separate activation / reset button, which is cumbersome and increases the cost, limiting the use and promotion of these generator sets.

[0003] Therefore, existing technologies have shortcomings and need to be improved and developed. Utility Model Content

[0004] This utility model provides a low-power module for generator sets, addressing the problem that existing battery-powered generator sets lack a low-power design suitable for actual product needs when in standby mode. In low-power mode, the power consumption is not low, and over time, the generator set's battery can easily be drained, preventing the unit from starting. Furthermore, in current low-power modes, most units require a separate activation / reset button, which is complex and increases the cost, limiting the use and promotion of generator sets.

[0005] This utility model embodiment provides a low-power module for a generator set, including a detection circuit, a power supply circuit, a power control circuit, a drive control circuit, a speed acquisition circuit, a low-dropout voltage regulator, and a microcontroller. The input terminal of the detection circuit is electrically connected to a power switch, and the output terminal of the detection circuit is connected to the power switch signal input pin of the microcontroller to output a signal indicating the power switch status to the microcontroller. The input terminal of the power supply circuit is electrically connected to the power switch, and the output terminal of the power supply circuit is electrically connected to the input terminal of the power control circuit and the input terminal of the low-dropout voltage regulator, wherein the output terminal of the low-dropout voltage regulator is electrically connected to the power input pin of the microcontroller. The output terminal of the power control circuit is electrically connected to... The input terminal of the drive control circuit and the output terminal of the drive control circuit are electrically connected to the electrical appliances of the generator set. The input terminal of the speed acquisition circuit is connected to the signal terminal of the ignition coil of the high-voltage transformer of the generator set, and the output terminal of the speed acquisition circuit is connected to the speed acquisition signal input pin of the microcontroller to convert the ignition signal of the high-voltage transformer into a pulse signal and output it to the microcontroller. The first output pin of the microcontroller is connected to the control terminal of the power control circuit to control the on / off state of the power control circuit. The second to Nth output pins of the microcontroller are connected to the control terminal of the drive control circuit to control the on / off state of the electrical appliances, where N is a natural number and the value of N is equal to the number of electrical appliances.

[0006] Furthermore, the generator set also includes a battery, the output of which is electrically connected to the power switch.

[0007] Furthermore, the detection circuit includes a resistor R1, a capacitor C1, and a diode D1, wherein the anode of the diode D1 is connected to the power switch, one end of the resistor R1 is connected to the cathode of the diode D1, and the other end is connected to the first terminal of the capacitor C1. The second terminal of the capacitor C1 is grounded, and the first terminal of the capacitor C1 is connected to the power switch signal input pin of the microcontroller. When the power switch is always on, the detection circuit is used to output a high-level signal to the microcontroller. When the power switch changes from off to on, the detection circuit is used to output a rising edge signal to the microcontroller.

[0008] Furthermore, the power supply circuit includes a diode D2 and a capacitor C2. The anode of the diode D2 is connected to the power switch, the cathode of the diode D2 is connected to the input terminal of the low dropout regulator and the first terminal of the capacitor C2, and the second terminal of the capacitor C2 is grounded. When the power switch is off, the diode D2 is used to prevent reverse power supply to the detection circuit.

[0009] Furthermore, the power control circuit is electrically connected to a MOSFET Q1. When the microcontroller outputs a switch signal 1 to the power control circuit, it is used to control the on / off state of the MOSFET Q1. In order to control the power supply circuit to only supply power to the low dropout regulator when the low power module enters low power mode, the microcontroller outputs the switch signal 1 to disconnect the power control circuit.

[0010] Furthermore, within the drive control circuit, each output pin of the microcontroller is electrically connected to a MOSFET on the control terminal of the drive control circuit, and the signal of the Nth output pin corresponds to the MOSFET QN. When the microcontroller outputs switch signal 2 to switch signal N to the drive control circuit, it is used to control the on / off state of the MOSFET corresponding to each appliance.

[0011] Furthermore, the speed acquisition circuit includes a current-limiting resistor R2, an opto-isolator, and a pull-up resistor R3. One end of the current-limiting resistor R2 is connected to the high-voltage transformer signal terminal, and the other end is connected to the input terminal of the opto-isolator. The output terminal of the opto-isolator is connected to the pull-up resistor R3 and the speed acquisition pin of the microcontroller. The other end of the pull-up resistor R3 is connected to the operating voltage. When the ignition signal has a negative wave, the opto-isolator is turned on to convert the ignition signal into the pulse signal and output it to the microcontroller.

[0012] Furthermore, the MOSFET Q1 is model IRF5305, and the MOSFET in the drive control circuit is model HC030N10L.

[0013] Furthermore, the low-dropout regulator is model XC6206P502MR.

[0014] Furthermore, the microcontroller is model RB58F175A.

[0015] Beneficial effects:

[0016] As can be seen from the above technical solutions, this utility model provides a low-power module for generator sets. It features a compact structure, high integration, and is suitable for various small generator sets equipped with batteries. The low-power module can determine its current operating mode based on the collected speed, ignition signal, and detection circuit signals. For example, it enters low-power mode when the two conditions of 4 minutes of power-on and 0 speed are met. If the speed returns to normal within 4 minutes, it enters normal operating mode. After entering low-power mode, the module can be activated by adjusting the speed or restarting the power switch to restore normal operating mode. This eliminates the need for a separate activation button, reducing generator set production costs and minimizing battery wear during daily use, thus extending battery life. Therefore, the low-power module for generator sets provided by this utility model has the following beneficial effects:

[0017] 1. Through the coordinated functions of the detection circuit, power supply circuit, power control circuit, drive control circuit, speed acquisition circuit, low-dropout regulator, and microcontroller, the generator set can automatically enter a low-power mode when not in operation. In this mode, the current at the power switch can be reduced to below 100μA, significantly slowing battery drain, extending battery life, and improving overall reliability. Furthermore, by comprehensively judging the speed and power status through the microcontroller, normal operation can be resumed without external activation buttons, simplifying the operation process and reducing manufacturing and maintenance costs.

[0018] 2. The detection circuit employs a combination of resistors, capacitors, and diodes, enabling both high-level detection of the continuously on power switch and outputting a rising edge signal at the moment of power-on. This helps the microcontroller distinguish between the "continuously on" and "just turned on" states. This structure avoids false triggering and improves the accuracy and reliability of system state recognition.

[0019] 3. By introducing a combination of capacitors and diodes into the power supply circuit, it is ensured that the capacitor cannot supply power to the detection circuit in reverse through the power path when the power switch is turned off. This avoids false high-level output of the detection circuit due to residual voltage in the capacitor, improves the system's anti-interference capability, and reduces the false judgment rate.

[0020] 4. The main power supply branch of the whole machine is centrally controlled by MOSFET Q1. When the microcontroller enters the low power mode, the MOSFET Q1 is automatically turned off, thereby cutting off all unnecessary loads and only retaining the LDO, i.e., low dropout regulator, to power the microcontroller. At the same time, the microcontroller executes low power instructions to minimize the overall static power consumption and improve the battery maintenance capability of the module in the long standby state.

[0021] 5. The drive control circuit is designed as an expandable multi-MOSFET Q2 structure, which allows the microcontroller to independently control the on / off state of multiple electrical appliances through multiple output pins. It has good modularity and configurability, which is conducive to adapting to the control requirements of various actuators in different types of generator sets and improving the product's versatility and compatibility.

[0022] 6. The speed acquisition circuit adopts a structure of current-limiting resistor, opto-isolator and pull-up resistor, which can effectively suppress the interference of the high-voltage transformer ignition signal to the low-voltage control system, and at the same time convert the ignition negative wave into a logic level pulse signal, ensuring the safety and stability of signal acquisition, and enhancing the electromagnetic compatibility and operational stability of the system.

[0023] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered part of the inventive subject matter of this disclosure, provided that such concepts do not contradict each other.

[0024] The foregoing and other aspects, embodiments, and features of the teachings of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0025] The accompanying drawings are not drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0026] Fig. 1 This is a circuit diagram of a low-power module for a generator set according to an embodiment of this application.

[0027] Fig. 2 This is a detailed circuit structure diagram of a low-power module for a generator set in an embodiment of this application. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this invention pertains.

[0029] The terms "first," "second," and similar words used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" mean that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0030] In existing technologies, conventional battery-powered generator sets lack a low-power design suitable for actual product needs when in a standby state. The power consumption in low-power mode is not truly low, and over time, the generator set's battery can easily become completely drained, preventing the unit from starting. Furthermore, in current low-power modes, most units require a separate activation / reset button for activation, which is cumbersome and increases the unit's cost, limiting its use and widespread adoption.

[0031] Therefore, this utility model embodiment provides a low-power module for generator sets, referring to... Figs. 1-2 The generator set includes a detection circuit, a power supply circuit, a power control circuit, a drive control circuit, a speed acquisition circuit, a low-dropout voltage regulator, and a microcontroller. In some embodiments, the generator set also includes a battery, the output of which is electrically connected to a power switch. Through the coordination of electrical and signal connections, a complete control loop is formed: the detection circuit identifies the power switch status; the power supply circuit is responsible for introducing power into the module; the power control circuit controls the entire power path through a MOSFET Q1; the drive control circuit drives the electrical load using a MOSFET array; the speed acquisition circuit uses an optocoupler to convert the negative wave of the high-voltage transformer into a pulse signal; and the microcontroller serves as the control core, implementing logical judgments and switch execution. The overall structure is reasonable, and the logical closed loop is clear, achieving low-power control and efficient wake-up of the generator set, ensuring that the battery is not excessively consumed.

[0032] The input of the detection circuit is electrically connected to the power switch, and the output signal is connected to the microcontroller's I / O port. The power supply circuit is led out from the power switch and connected to the power control circuit and the LDO input. The LDO output is connected to the microcontroller's VCC. The output of the power control circuit is connected to the drive control circuit. The output of the drive control circuit is connected to the generator set's electrical components. The speed acquisition circuit's input signal is connected to the high-voltage transformer, and its output signal is connected to the microcontroller's speed acquisition pin. The microcontroller's control pins are connected to the power control circuit and the control terminals of each MOSFET. Through the signal and power connections of the various functional sub-circuits within the module, the system can complete status recognition, load management, and power consumption control. Based on a clear structure, it achieves low-power battery maintenance, automatic switching control, independent load logic drive, and operational status perception.

[0033] The input of the detection circuit is electrically connected to the power switch, and the output of the detection circuit is connected to the power switch signal input pin of the microcontroller to output a power switch status signal to the microcontroller. In some embodiments, the detection circuit includes a resistor R1, a capacitor C1, and a diode D1. The anode of diode D1 is connected to the power switch, one end of resistor R1 is connected to the cathode of diode D1, and the other end is connected to the first terminal of capacitor C1. The second terminal of capacitor C1 is grounded, and the first terminal of capacitor C1 is connected to the power switch signal input pin of the microcontroller. When the power switch is always on, the detection circuit outputs a high-level signal to the microcontroller. When the power switch changes from off to on, the detection circuit outputs a rising edge signal to the microcontroller. The continuous power supply of the battery generates a high-level signal, and the moment of switching on and off generates a rising edge signal for the microcontroller to identify. The above connections constitute an RC delay and edge-triggered identification network, which stably identifies the switch on / off signal, avoids level jitter misjudgment, and enhances the system wake-up reliability.

[0034] The input terminal of the power supply circuit is electrically connected to the power switch, and the output terminal is electrically connected to the input terminal of the power control circuit and the input terminal of the low-dropout regulator, respectively. The output terminal of the low-dropout regulator is electrically connected to the power input pin of the microcontroller. In some embodiments, the power supply circuit includes a diode D2 and a capacitor C2. The anode of diode D2 is connected to the power switch, and the cathode is connected to the input terminal of the low-dropout regulator and the first terminal of capacitor C2. The second terminal of capacitor C2 is grounded. When the power switch is off, diode D2 prevents reverse power supply to the detection circuit. Diode D2 conducts in one direction to prevent capacitor C2 from discharging in reverse to the detection circuit. Capacitor C2 is used for filtering and power supply buffering. The power supply circuit achieves electrical isolation between the power supply path and the detection circuit, preventing logical misidentification and improving the system power supply stability.

[0035] The output of the power control circuit is electrically connected to the input of the drive control circuit, and the output of the drive control circuit is electrically connected to the electrical components of the generator set. In some embodiments, the power control circuit is electrically connected to a MOSFET Q1. When the microcontroller outputs a switching signal 1 to the power control circuit, it controls the switching of MOSFET Q1. This allows the microcontroller to output a switching signal 1 to disconnect the power control circuit when the low-power module enters low-power mode, controlling the power supply circuit to supply power only to the low-dropout regulator. The drain of the MOSFET Q1 connected to the power control circuit is connected to the main power supply load, the source is grounded, and the gate is connected to the microcontroller's I / O control port. The microcontroller can output a high-level signal to control the MOSFET Q1 to conduct, realizing the switching of the main circuit. When entering low-power mode, the main load can be disconnected, maintaining power only to the LDO, improving the system's static standby performance.

[0036] The input signal of the speed acquisition circuit is connected to the signal terminal of the ignition coil of the generator set's high-voltage transformer. The output signal of the speed acquisition circuit is connected to the speed acquisition signal input pin of the microcontroller to convert the ignition signal from the high-voltage transformer into a pulse signal and output it to the microcontroller. The first output pin of the microcontroller is connected to the control terminal of the power control circuit to control the on / off state of the power control circuit. The second to Nth output pins of the microcontroller are connected to the control terminal of the drive control circuit to control the on / off state of the electrical appliances, where N is a natural number and the value of N is equal to the number of electrical appliances.

[0037] In some embodiments, within the drive control circuit, each microcontroller's output pin is powered on and connected to a MOSFET at the control terminal of the drive control circuit, with the Nth output pin corresponding to MOSFET QN, as shown in the reference. Fig. 2 For example, the second output pin for transmitting switch signal 2 corresponds to MOSFET Q2, and the third output pin for transmitting switch signal 3 corresponds to MOSFET Q3. When the microcontroller outputs switch signal 2 to switch signal N to the drive control circuit, it controls the on / off state of the MOSFET corresponding to each appliance. In the drive control circuit, the drain of each MOSFET is connected to the negative terminal of the appliance, the source is grounded, and the gate is connected to an independent control pin of the microcontroller. The microcontroller controls the gate level; a high level enables conduction (load operation), and a low level disables conduction (load disconnection), achieving fine-grained independent control of multiple loads and improving system adaptability and control flexibility.

[0038] In some embodiments, the speed acquisition circuit includes a current-limiting resistor R2, an opto-isolator, and a pull-up resistor R3. One end of the current-limiting resistor R2 is connected to the high-voltage transformer signal terminal, and the other end is connected to the input terminal of the opto-isolator. The output terminal of the opto-isolator is connected to the pull-up resistor R3 and the speed acquisition pin of the microcontroller. The other end of the pull-up resistor R3 is connected to the operating voltage. In some embodiments, the opto-isolator is a PC817. When the ignition signal has a negative wave, the opto-isolator is turned on to convert the ignition signal into a pulse signal and output it to the microcontroller.

[0039] The low-power module can reduce the power consumption of the generator set when it is not in use and the power switch is on for an extended period, thus achieving a low-power mode. For example, it enters low-power mode when two conditions are met: power-on for 4 minutes and the speed is 0. Once the speed returns to normal within 4 minutes, it enters normal operating mode. After entering low-power mode, the module can be activated by adjusting the speed or by turning the power switch back on, restoring normal operating mode. This eliminates the need for a separate activation button, reducing generator set production costs and battery wear during daily use, making the generator set more convenient to use. Furthermore, the elimination of a separate activation button by activating via the power switch helps reduce generator set production costs.

[0040] Reference Fig. 2The low-power module operates as follows: When the power switch is turned on, the low-power module powers on and begins operation, opening the corresponding solenoid valves and indicator lights, and starting a timer. At this time, the microcontroller inside the low-power module reads the signals output by the detection circuit and the speed acquisition circuit in real time. When the speed is 0 and the detection circuit continuously outputs a high-level signal, after accumulating 4 minutes, the low-power module shuts off the power control circuit, and the microcontroller enters standby mode. At this time, the overall power consumption is greatly reduced; under the above process, the current value at the power switch can be reduced to below 100μA. If the generator set is manually or electrically started at this time, and the microcontroller detects a speed signal, it exits standby mode and enters working mode. If there is no speed signal at this time, but the power switch is turned on again, the microcontroller of the low-power module can detect the rising edge signal and can still activate the low-power module. When the low-power module is working, it can continuously detect a normal speed; at this time, the timer refreshes, and it will not enter low-power mode.

[0041] In some embodiments, the MOSFET Q1 is an IRF5305, and the MOSFET in the drive control circuit is an HC030N10L.

[0042] In some embodiments, the low-dropout regulator is model XC6206P502MR.

[0043] In some embodiments, the microcontroller is model RB58F175A.

[0044] In summary, the low-power module for generator sets provided by this utility model has a compact structure and high integration, and is suitable for various small generator sets equipped with batteries. The low-power module can determine the current operating mode based on the collected speed, ignition signal, and detection circuit signals. For example, it enters the low-power mode when the two conditions of 4 minutes of power-on and 0 speed are met. If the speed is normal within 4 minutes, it enters the normal operating mode. After entering the low-power mode, the module can be activated by adjusting the speed or turning the power switch back on to restore the normal operating mode. There is no need for a separate activation button, which reduces the production cost of the generator set and reduces battery wear during daily use, extending its service life. Therefore, the low-power module for generator sets provided by this utility model has the following beneficial effects: 1. Through the functional cooperation between the detection circuit, power supply circuit, power control circuit, drive control circuit, speed acquisition circuit, low-dropout regulator, and microcontroller, the generator set can automatically enter the low-power mode when not in operation. At this time, the current value at the power switch can be reduced to below 100μA, thereby significantly slowing down battery power consumption, extending service life, and improving the overall reliability of the unit. Furthermore, by comprehensively judging the rotation speed and power supply status through the microcontroller, normal operation can be restored without the need for external activation buttons, simplifying the operation process and reducing manufacturing and maintenance costs. 2. The detection circuit uses a combination of resistors, capacitors, and diodes, which not only achieves high-level detection of the continuously on power switch but also outputs a rising edge signal at the moment the power is turned on, helping the microcontroller distinguish between the "continuously on" and "just turned on" states. This structure avoids false triggering and improves the accuracy and reliability of system status recognition. 3. By introducing a combination of capacitors and diodes into the power supply circuit, it is ensured that when the power switch is turned off, the capacitor cannot supply reverse power to the detection circuit through the power path, avoiding false high-level outputs from the detection circuit due to residual capacitor voltage, improving the system's anti-interference capability, and reducing the false judgment rate. 4. MOSFET Q1 is used for centralized control of the main power supply branch of the entire unit. When the microcontroller enters low-power mode, MOSFET Q1 is automatically turned off, thereby cutting off all unnecessary loads and only retaining the LDO (low dropout regulator) to power the microcontroller. Simultaneously, the microcontroller executes low-power instructions internally, minimizing overall static power consumption and improving the module's battery sustainment capability during long-term standby. 5. The drive control circuit is designed with an expandable structure of multiple MOSFETs Q2, allowing the microcontroller to independently control the on / off state of multiple electrical appliances through multiple output pins. It has good modularity and configurability, facilitating adaptation to the control requirements of various actuators in different types of generator sets, improving product versatility and compatibility. 6. The speed acquisition circuit adopts a structure of current-limiting resistors, opto-isolators, and pull-up resistors, effectively suppressing interference from the high-voltage transformer ignition signal to the low-voltage control system. It also converts the ignition negative wave into a logic level pulse signal, ensuring safe and stable signal acquisition and enhancing the system's electromagnetic compatibility and operational stability.

[0045] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A low-power module for generator sets, characterized in that, It includes a detection circuit, a power supply circuit, a power control circuit, a drive control circuit, a speed acquisition circuit, a low-dropout voltage regulator, and a microcontroller; The input terminal of the detection circuit is electrically connected to the power switch, and the output terminal of the detection circuit is connected to the power switch signal input pin of the microcontroller to output the power switch status signal to the microcontroller. The input terminal of the power supply circuit is electrically connected to the power switch, and the output terminal of the power supply circuit is electrically connected to the input terminal of the power control circuit and the input terminal of the low dropout regulator, wherein the output terminal of the low dropout regulator is electrically connected to the power input pin of the microcontroller. The output terminal of the power control circuit is electrically connected to the input terminal of the drive control circuit, and the output terminal of the drive control circuit is electrically connected to the electrical appliances of the generator set. The input signal of the speed acquisition circuit is connected to the signal terminal of the ignition coil of the high voltage pack of the generator set, and the output signal of the speed acquisition circuit is connected to the speed acquisition signal input pin of the microcontroller to convert the ignition signal of the high voltage pack into a pulse signal and output it to the microcontroller. The first output pin signal of the microcontroller is connected to the control terminal of the power control circuit to control the on / off state of the power control circuit. The second to Nth output pins of the microcontroller are connected to the control terminal of the drive control circuit to control the on / off state of the electrical appliances, where N is a natural number and the value of N is equal to the number of electrical appliances.

2. The low-power module for a generator set according to claim 1, characterized in that, The generator set also includes a battery, the output of which is electrically connected to the power switch.

3. A low-power module for a generator set according to claim 1, characterized in that, The detection circuit includes a resistor R1, a capacitor C1, and a diode D1. The anode of the diode D1 is connected to the power switch. One end of the resistor R1 is connected to the cathode of the diode D1, and the other end is connected to the first terminal of the capacitor C1. The second terminal of the capacitor C1 is grounded. The first terminal of the capacitor C1 is connected to the power switch signal input pin of the microcontroller. When the power switch is always on, the detection circuit outputs a high-level signal to the microcontroller. When the power switch changes from off to on, the detection circuit outputs a rising edge signal to the microcontroller.

4. A low-power module for a generator set according to claim 1, characterized in that, The power supply circuit includes a diode D2 and a capacitor C2. The anode of the diode D2 is connected to the power switch, the cathode of the diode D2 is connected to the input terminal of the low dropout regulator and the first terminal of the capacitor C2, and the second terminal of the capacitor C2 is grounded. When the power switch is off, the diode D2 is used to prevent reverse power supply to the detection circuit.

5. A low-power module for a generator set according to claim 1, characterized in that, The power control circuit is electrically connected to a MOSFET Q1. When the microcontroller outputs a switch signal 1 to the power control circuit, it controls the on / off state of the MOSFET Q1. When the low-power module enters low-power mode, the microcontroller outputs the switch signal 1 to disconnect the power control circuit, controlling the power supply circuit to supply power only to the low-dropout regulator.

6. A low-power module for a generator set according to claim 5, characterized in that, In the drive control circuit, each output pin of the microcontroller is connected to a MOSFET on the control terminal of the drive control circuit, and the signal of the Nth output pin corresponds to the MOSFET QN. When the microcontroller outputs switch signal 2 to switch signal N to the drive control circuit, it is used to control the on / off state of the MOSFET corresponding to each appliance.

7. A low-power module for a generator set according to claim 6, characterized in that, The speed acquisition circuit includes a current-limiting resistor R2, an opto-isolator, and a pull-up resistor R3. One end of the current-limiting resistor R2 is connected to the signal terminal of the high-voltage transformer, and the other end is connected to the input terminal of the opto-isolator. The output terminal of the opto-isolator is connected to the pull-up resistor R3 and the speed acquisition pin of the microcontroller. The other end of the pull-up resistor R3 is connected to the operating voltage. When the ignition signal has a negative wave, the opto-isolator is turned on to convert the ignition signal into the pulse signal and output it to the microcontroller.

8. A low-power module for a generator set according to claim 6, characterized in that, The MOSFET Q1 is model IRF5305, and the MOSFET in the drive control circuit is model HC030N10L.

9. A low-power module for a generator set according to claim 1, characterized in that, The low-dropout regulator is model XC6206P502MR.

10. A low-power module for a generator set according to claim 1, characterized in that, The microcontroller is model RB58F175A.

Images