Ignition device, gas engine and production plant

Abstract

The utility model provides a kind of ignition device, gas engine and production equipment, it is related to engine technical field, the ignition device includes primary coil, secondary coil, first magnetic element, second magnetic element, voltage monitoring coil and voltage indication module, wherein: primary coil and secondary coil are coupled by first magnetic element, and the number of turns of primary coil is less than the number of turns of secondary coil;Secondary coil and voltage monitoring coil are coupled by second magnetic element, and the number of turns of voltage monitoring coil is less than the number of turns of secondary coil;Voltage indication module is connected with voltage monitoring coil, voltage indication module is used to receive the first output voltage of voltage monitoring coil, and the size of the second output voltage of secondary coil is indicated according to first output voltage.The utility model can directly monitor the actual output voltage of ignition coil, improve voltage fluctuation monitoring precision and reliability under engine dynamic condition, reduce fault false alarm rate.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to an ignition device, a gas engine, and production equipment. Background Technology

[0002] In a gas turbine engine operating system, the ignition coil, as a core functional component, plays a decisive role in ensuring the normal operation of the engine. This component is essentially a miniature step-up transformer; its core function is to convert the low-voltage electrical energy output from the ignition controller into high-voltage electrical energy. This high-voltage current breaks down the spark plug gap, generating an electric spark that reliably ignites the combustible mixture in the engine cylinder, driving the piston and ultimately achieving power output.

[0003] However, current ignition coil technology faces several critical technical bottlenecks that urgently need to be addressed. First, the erosion and vaporization effects of the spark plug electrodes under continuous discharge conditions cause the ignition gap to progressively increase. As the gap widens, the required breakdown voltage increases accordingly, leading to a rise in the secondary coil output voltage. This can trigger a series of serious malfunctions, such as high-voltage wire breakdown, surface discharge of the spark plug ceramic insulator, and misfires, affecting not only engine performance parameters but also operational safety. Second, existing control systems have significant deficiencies in voltage monitoring: they rely solely on the estimated primary voltage to indirectly calculate the secondary voltage. This monitoring method not only has large measurement errors and is complex to operate but also lacks necessary intuitiveness. Crucially, the lack of voltage monitoring means that it is impossible to identify signs of spark plug performance degradation or failure in real time, hindering timely warnings and posing a significant safety hazard to the reliable operation of gas engines. Therefore, how to effectively monitor the voltage of the ignition coil is a pressing technical problem that needs to be solved. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides an ignition device, a gas engine and production equipment, which effectively solves the problem of the inability to effectively monitor the voltage of the ignition coil.

[0005] In a first aspect, this utility model provides an ignition device, which includes a primary coil, a secondary coil, a first magnetic element, a second magnetic element, a voltage monitoring coil, and a voltage indicating module, wherein:

[0006] The primary coil and the secondary coil are coupled through the first magnetic element, and the number of turns of the primary coil is less than the number of turns of the secondary coil.

[0007] The secondary coil and the voltage monitoring coil are coupled through the second magnetic element, and the number of turns of the voltage monitoring coil is less than the number of turns of the secondary coil.

[0008] The voltage indication module is connected to the voltage monitoring coil. The voltage indication module is used to receive the first output voltage of the voltage monitoring coil and indicate the magnitude of the second output voltage of the secondary coil based on the first output voltage.

[0009] In an optional embodiment, the voltage indicating module includes a light-emitting diode (LED) connected to the voltage monitoring coil. The LED receives the first output voltage and emits light, and the intensity of the LED indicates the magnitude of the second output voltage.

[0010] In an optional embodiment, the voltage indication module further includes a Zener diode connected to the light-emitting diode.

[0011] In an optional embodiment, the ignition device further includes a voltage signal acquisition module and a voltage signal processing module, wherein:

[0012] The voltage signal acquisition module is connected to the voltage monitoring coil, and the voltage signal acquisition module is used to acquire the first voltage signal of the voltage monitoring coil;

[0013] The voltage signal processing module is connected to the voltage signal acquisition module and the voltage indicator module respectively. The voltage signal processing module is used to receive the first voltage signal, perform precise rectification and filtering on the first voltage signal to obtain a second voltage signal, and transmit the second voltage signal to the voltage indicator module.

[0014] In an optional embodiment, the ignition device further includes an analog output module connected to the voltage signal acquisition module. The analog output module is used to receive the first voltage signal and generate a standard analog signal based on the first voltage signal, which is then output to an external monitoring module.

[0015] In an optional implementation, the analog output module includes a signal modulation unit, an analog-to-digital conversion unit, a signal control unit, and a digital-to-analog conversion unit, wherein:

[0016] The signal modulation unit is connected to the voltage signal acquisition module. The signal modulation unit is used to receive the first voltage signal and perform signal modulation. The signal modulation includes one or more of filtering, isolation, voltage division and amplification.

[0017] The analog-to-digital conversion unit is connected to the signal modulation unit, and the analog-to-digital conversion unit is used to convert the first voltage signal modulated by the signal into a digital signal.

[0018] The signal control unit is connected to the analog-to-digital conversion unit, and the signal control unit is used to calculate the target value corresponding to the amplitude of the second output voltage based on the digital signal;

[0019] The digital-to-analog conversion unit is connected to the signal control unit, and the digital-to-analog conversion unit is used to convert the target value into the standard analog signal and output it to the external monitoring module.

[0020] In an optional implementation, the signal modulation unit includes a filtering subunit, an isolation subunit, a voltage divider subunit, and an amplification subunit, wherein:

[0021] The filtering subunit is connected to the voltage signal acquisition module, and the filtering subunit is used to filter out noise in the first voltage signal;

[0022] The isolation subunit is connected to the filtering subunit, and the isolation subunit is used to electrically isolate the first voltage signal.

[0023] The voltage divider subunit is connected to the isolation subunit, and the voltage divider subunit is used to perform voltage division processing on the first voltage signal;

[0024] The amplification subunit is connected to the isolation subunit, and the amplification subunit is used to amplify the first voltage signal.

[0025] In an optional embodiment, the ignition device further includes a switch output module, which is connected to the voltage signal processing module. The switch output module is used to receive the second voltage signal, generate a switch signal, and output it to the external monitoring module.

[0026] Secondly, this utility model provides a gas engine, which includes the ignition device, ignition controller and spark plug described in the first aspect of this utility model. The primary coil of the ignition device is connected to the ignition controller, and the secondary coil of the ignition device is connected to the spark plug.

[0027] Thirdly, this utility model provides a production equipment, which includes the gas engine described in the second aspect of this utility model.

[0028] The ignition device, gas engine, and production equipment provided by this invention integrate ignition voltage monitoring functionality into the ignition coil, enabling direct monitoring of the actual output voltage of the ignition coil. Under dynamic engine operating conditions, this improves the accuracy and reliability of voltage fluctuation monitoring and reduces the false alarm rate. Employing an independent hardware circuit design, it eliminates the need for upper-computer software algorithms and uses LEDs to visually indicate overvoltage conditions, effectively shortening response time while reducing computational resource consumption and lowering overall costs. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a first schematic diagram of the ignition device structure provided in this embodiment of the utility model;

[0031] Figure 2 This is a second schematic diagram of the ignition device structure provided in this embodiment of the present invention;

[0032] Figure 3 This is a third schematic diagram of the ignition device structure provided in this embodiment of the utility model;

[0033] Figure 4 This is a fourth schematic diagram of the ignition device structure provided in this embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the gas engine structure provided in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the production equipment structure provided in an embodiment of this utility model.

[0036] Key component symbols: 100-Ignition device; 110-Primary coil; 120-Secondary coil; 130-First magnetic element; 140-Second magnetic element; 150-Voltage monitoring coil; 160-Voltage indicator module; 161-Light emitting diode; 162-Zenith diode; 170-Voltage signal acquisition module; 180-Voltage signal processing module; 190-Analog output module; 200-Switch output module; 300-Gas engine; 310-Ignition controller; 320-Spark plug; 400-Production equipment. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be further described clearly and completely below with reference to the accompanying drawings of the embodiments of this utility model. It should be noted that the described embodiments are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] In a gas turbine engine operating system, the ignition coil, as a core functional component, plays a decisive role in ensuring the normal operation of the engine. This component is essentially a miniature step-up transformer; its core function is to convert the low-voltage electrical energy output from the ignition controller into high-voltage electrical energy. This high-voltage current breaks down the spark plug gap, generating an electric spark that reliably ignites the combustible mixture in the engine cylinder, driving the piston and ultimately achieving power output.

[0041] However, current ignition coil technology faces several critical technical bottlenecks that urgently need to be addressed. First, the erosion and vaporization effects of the spark plug electrodes under continuous discharge conditions cause the ignition gap to progressively increase. As the gap widens, the required breakdown voltage increases accordingly, leading to a rise in the secondary coil output voltage. This can trigger a series of serious malfunctions, such as high-voltage wire breakdown, surface discharge of the spark plug ceramic insulator, and misfires, affecting not only engine performance parameters but also operational safety. Second, existing control systems have significant deficiencies in voltage monitoring: they rely solely on the estimated primary voltage to indirectly calculate the secondary voltage. This monitoring method not only has large measurement errors and is complex to operate but also lacks necessary intuitiveness. Crucially, the lack of voltage monitoring means that it is impossible to identify signs of spark plug performance degradation or failure in real time, hindering timely warnings and posing a significant safety hazard to the reliable operation of gas engines. Therefore, how to effectively monitor the voltage of the ignition coil is a pressing technical problem that needs to be solved.

[0042] Example 1

[0043] This utility model provides an ignition device that effectively solves the problem of not being able to effectively monitor the voltage of the ignition coil. Figure 1 This is a first schematic diagram of the ignition device structure provided in this embodiment of the utility model, as shown below. Figure 1As shown, the ignition device 100 includes a primary coil 110, a secondary coil 120, a first magnetic element 130, a second magnetic element 140, a voltage monitoring coil 150, and a voltage indication module 160.

[0044] The primary coil 110 is the input terminal of the ignition device 100. It can be connected to the ignition controller. The primary coil 110 has fewer turns and a lower input voltage. The secondary coil 120 is the output terminal of the ignition device. It can be connected to the spark plug via a high-voltage wire. The secondary coil 120 has more turns and a higher output voltage. The primary coil 110 has fewer turns than the secondary coil 120. The primary coil 110 and secondary coil 120 are coupled through a first magnetic element 130, thereby boosting the input voltage of the primary coil 110 and outputting a high voltage from the secondary coil 120. This high voltage can break down the spark plug ignition gap, achieving ignition discharge.

[0045] The voltage monitoring coil 150 and the secondary coil 120 are coupled through the second magnetic element 140. The number of turns in the voltage monitoring coil 150 is much smaller than that in the secondary coil 120, and the output voltage of the voltage monitoring coil 150 is proportional to the output voltage of the secondary coil 120. When the ignition device 100 is working, as the spark plug electrode gap gradually increases, the output voltage of the secondary coil 120 also gradually increases, and the output voltage of the voltage monitoring coil 150 also increases proportionally.

[0046] In this embodiment of the present invention, the first magnetic element 130 and the second magnetic element 140 may be iron cores, the output voltage of the voltage monitoring coil 150 is the first output voltage, and the output voltage of the secondary coil 120 is the second output voltage, which is the ignition voltage of the ignition device 100.

[0047] The voltage indication module 160 is connected to the voltage monitoring coil 150. The first output voltage of the voltage monitoring coil 150 can indirectly reflect the ignition voltage of the spark plug. By adjusting the turns ratio of the voltage monitoring coil 150 and the secondary coil 120, the voltage monitoring coil 150 can output a proportional first output voltage to the voltage indication module 160. The voltage indication module 160 receives the first output voltage from the voltage monitoring coil 150 and indicates the magnitude of the second output voltage of the secondary coil 120 based on the first output voltage. Through the coordinated design of the voltage monitoring coil 150 and the voltage indication module 160, accurate monitoring and intuitive indication of the ignition voltage of the ignition device are achieved.

[0048] Figure 2 This is a second schematic diagram of the ignition device structure provided in this embodiment of the present invention, as shown below. Figure 2As shown, the voltage indication module 160 includes a light-emitting diode (LED) 161 and a Zener diode 162. The LED 161 is connected to the voltage monitoring coil 150 and is used to receive a first output voltage and emit light. The intensity of the light emitted by the LED 161 indicates the magnitude of the second output voltage of the secondary coil 120. The Zener diode 162 is connected to the LED 161 and is used to provide voltage regulation protection for the LED 161.

[0049] Specifically, when the ignition system is working normally, as the spark plug electrode gap gradually increases, the second output voltage of the secondary coil 120 also gradually increases, and the first output voltage of the voltage monitoring coil 150 increases proportionally. When the second output voltage of the secondary coil 120 is within the normal range, the first output voltage of the voltage monitoring coil 150 is insufficient to drive the LED 161 to light up. When the second output voltage of the secondary coil 120 exceeds the normal operating range, the second output voltage of the voltage monitoring coil 150 increases proportionally, exceeding the light-emitting threshold of the LED 161, and the LED 161 begins to light up. The higher the second output voltage of the secondary coil 120, i.e., the higher the ignition voltage, the brighter the LED 161. When the voltage applied to the LED 161 is large enough, the Zener diode 162 conducts in reverse, ensuring that the voltage on the LED 161 never exceeds the damage threshold, thus preventing damage to the LED 161.

[0050] In this embodiment of the invention, the brightness of the light-emitting diode 161 can be observed to intuitively determine whether the second output voltage of the secondary coil 120 is too high. Thus, maintenance personnel can quickly determine the ignition status without specialized equipment. An abnormally high brightness directly indicates an overvoltage risk, allowing for immediate adjustment of the spark plug electrode ignition gap or replacement of the spark plug, effectively shortening troubleshooting time and preventing engine damage caused by high-voltage breakdown.

[0051] As a further embodiment of this utility model, Figure 3 This is a third schematic diagram of the ignition device structure provided in this embodiment of the utility model, as shown below. Figure 3 As shown, the ignition device also includes a voltage signal acquisition module 170 and a voltage signal processing module 180.

[0052] The voltage signal acquisition module 170 is connected to the voltage monitoring coil 150, and is used to acquire the first voltage signal of the voltage monitoring coil 150. Optionally, the voltage signal acquisition module 170 can use a voltage sensor or voltage transformer to acquire the voltage signal of the voltage monitoring coil 150, depending on the actual situation.

[0053] The voltage signal processing module 180 is connected to both the voltage signal acquisition module 170 and the voltage indication module 160. The voltage signal processing module 180 receives a first voltage signal, performs precise rectification and filtering on the first voltage signal to obtain a second voltage signal, and transmits the second voltage signal to the voltage indication module 160. Optionally, the first voltage signal can be fully rectified using a precision instrumentation amplifier to eliminate the negative half-cycle signal, and then a second-order Butterworth low-pass filter can be used to suppress high-frequency noise such as ignition interference to obtain the second voltage signal, providing a stable input to the voltage indication module 160. Through end-to-end optimization of voltage signal acquisition, processing, and indication, high accuracy, strong anti-interference capabilities, and easy integration of ignition voltage monitoring are achieved, providing reliable data support for ignition fault early warning and performance optimization of the ignition device.

[0054] As a further embodiment of this utility model, Figure 4 This is a fourth schematic diagram of the ignition device structure provided in this embodiment of the utility model, as shown below. Figure 4 As shown, the ignition device also includes an analog output module 190 and a digital output module 200. The analog output module 190 is connected to the voltage signal acquisition module 170 and receives a first voltage signal, generating a standard analog signal based on the first voltage signal and outputting it to the external monitoring module. The digital output module 200 is connected to the voltage signal processing module 180 and receives a second voltage signal, generating a digital signal and outputting it to the external monitoring module.

[0055] The analog output module 190 includes a signal modulation unit, an analog-to-digital converter, a signal control unit, and a digital-to-analog converter. The signal modulation unit is connected to the voltage signal acquisition module 170. The signal modulation unit is used to receive the first voltage signal and perform signal modulation, which includes, but is not limited to, filtering, isolation, voltage division, and amplification.

[0056] Optionally, the signal modulation unit includes a filtering subunit, an isolation subunit, a voltage divider subunit, and an amplification subunit. The filtering subunit is connected to the voltage signal acquisition module 170 and is used to filter out noise in the first voltage signal. For example, a passive RC filter or an active filter chip can be used to filter out high-frequency noise and interference in the first voltage signal. The isolation subunit is connected to the filtering subunit and is used to electrically isolate the first voltage signal. For example, an optocoupler isolation chip or an isolation amplifier can be used to achieve electrical isolation between the first voltage signal and subsequent circuits, improving the anti-interference capability and safety of the ignition device and preventing high-voltage signals from damaging subsequent circuits.

[0057] In this embodiment of the invention, the voltage divider subunit is connected to the isolation subunit, and the voltage divider subunit is used to perform voltage division processing on the first voltage signal. If the amplitude of the first voltage signal exceeds the input range of the analog-to-digital converter unit, the voltage needs to be reduced through the voltage divider circuit of the voltage divider subunit. The amplification subunit is connected to the isolation subunit, and the amplification subunit is used to amplify the first voltage signal. If the amplitude of the first voltage signal is too small, an operational amplifier is needed to build an amplification circuit to amplify the signal.

[0058] The analog-to-digital converter (ADC) unit is connected to the signal modulation unit, and the ADC unit is used to convert the first voltage signal after signal modulation into a digital signal. In this embodiment of the invention, a suitable ADC chip can be selected according to the accuracy and speed requirements of the voltage monitoring of the ignition device.

[0059] The signal control unit is connected to the analog-to-digital converter unit. The signal control unit is used to calculate the target value corresponding to the amplitude of the second output voltage based on the digital signal. For example, the signal control unit can use devices such as microcontrollers, single-chip microcomputers, and digital signal processors to process the digital signal to obtain the target value corresponding to the amplitude of the second output voltage.

[0060] The digital-to-analog converter (DAC) is connected to the signal control unit. The DAC converts the target value into a standard analog signal for output to the external monitoring module. For example, to output a standard analog voltage signal of 0-5V, a DAC chip can be selected and connected to the signal control unit to convert the target value into an analog voltage signal for output to the external monitoring module. The external monitoring module can receive this analog voltage signal to remotely monitor the ignition voltage, thereby determining whether the spark plug electrode ignition gap needs adjustment or the spark plug needs to be replaced.

[0061] Alternatively, an operational amplifier and transistors can be used to form a voltage-to-current conversion circuit to convert the analog voltage signal output by the DAC chip into a corresponding analog current signal output.

[0062] In this embodiment of the invention, after receiving the second voltage signal sent by the voltage signal processing module 180, the switch output module 200 can achieve electrical isolation through optocoupler isolation. Then, a D flip-flop is used to perform edge detection on the second voltage signal to avoid jitter interference. Finally, it drives a MOSFET or relay to output a switch signal, such as a dry contact signal or a level signal, to an external monitoring module. The external monitoring module can detect the switch signal of the switch output module 200 through GPIO or interrupt pins, thereby triggering protective operations such as adjusting the spark plug electrode ignition gap or replacing the spark plug.

[0063] The ignition device provided in this embodiment integrates ignition voltage monitoring functionality into the ignition coil, enabling direct monitoring of the coil's actual output voltage. Under dynamic engine operating conditions, this improves the accuracy and reliability of voltage fluctuation monitoring and reduces false alarm rates. Employing an independent hardware circuit design, it eliminates reliance on host computer software algorithms. Overvoltage status is visually indicated via LEDs, effectively shortening response time and reducing computational resource consumption, thus lowering overall costs. Furthermore, the output signals from analog and digital output modules can be selected based on actual needs and site configuration, using either one or both signals to achieve remote monitoring of ignition voltage and ignition overvoltage, facilitating system integration.

[0064] Example 2

[0065] Based on the same technical concept as Embodiment 1 above, this utility model embodiment provides a gas engine. Figure 5 This is a schematic diagram of the gas engine structure provided in an embodiment of the present invention, as shown below. Figure 5 As shown, the gas engine 300 includes an ignition device 100, an ignition controller 310, and a spark plug 320 as described in Embodiment 1. The primary coil 110 of the ignition device 100 is connected to the ignition controller 310, and the secondary coil 120 of the ignition device 100 is connected to the spark plug 320.

[0066] It is understood that the implementation method of the ignition device described in Embodiment 1 above is also applicable to this embodiment and can achieve the same technical effect, so it will not be described again here.

[0067] Example 3

[0068] Based on the same technical concept as Embodiment 2 above, this utility model embodiment provides a production equipment. Figure 6 This is a schematic diagram of the production equipment structure provided in an embodiment of this utility model, as shown below. Figure 6 As shown, the production equipment 400 includes the gas engine 300 in Example 2.

[0069] It is understood that the implementation method of the gas engine described in Embodiment 2 above is also applicable to this embodiment and can achieve the same technical effect, so it will not be described again here.

[0070] In summary, the ignition device, gas engine, and production equipment provided by this utility model, by integrating ignition voltage monitoring functionality into the ignition coil, can directly monitor the actual output voltage of the ignition coil. Under dynamic engine operating conditions, this improves the accuracy and reliability of voltage fluctuation monitoring and reduces the false alarm rate. Employing an independent hardware circuit design, it eliminates the need for upper-computer software algorithms and uses LEDs to intuitively indicate overvoltage conditions, effectively shortening response time while reducing computational resource consumption and lowering overall costs.

[0071] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0072] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An ignition device, characterized in that, The ignition device includes a primary coil, a secondary coil, a first magnetic element, a second magnetic element, a voltage monitoring coil, and a voltage indication module, wherein: The primary coil and the secondary coil are coupled through the first magnetic element, and the number of turns of the primary coil is less than the number of turns of the secondary coil. The secondary coil and the voltage monitoring coil are coupled through the second magnetic element, and the number of turns of the voltage monitoring coil is less than the number of turns of the secondary coil. The voltage indication module is connected to the voltage monitoring coil. The voltage indication module is used to receive the first output voltage of the voltage monitoring coil and indicate the magnitude of the second output voltage of the secondary coil based on the first output voltage.

2. The ignition device according to claim 1, characterized in that, The voltage indication module includes a light-emitting diode (LED) connected to the voltage monitoring coil. The LED receives the first output voltage and emits light, and the intensity of the LED indicates the magnitude of the second output voltage.

3. The ignition device according to claim 2, characterized in that, The voltage indication module also includes a Zener diode, which is connected to the light-emitting diode.

4. The ignition device according to claim 1, characterized in that, The ignition device further includes a voltage signal acquisition module and a voltage signal processing module, wherein: The voltage signal acquisition module is connected to the voltage monitoring coil, and the voltage signal acquisition module is used to acquire the first voltage signal of the voltage monitoring coil; The voltage signal processing module is connected to the voltage signal acquisition module and the voltage indication module respectively. The voltage signal processing module is used to receive the first voltage signal, perform precise rectification and filtering on the first voltage signal to obtain the second voltage signal, and transmit the second voltage signal to the voltage indication module.

5. The ignition device according to claim 4, characterized in that, The ignition device also includes an analog output module, which is connected to the voltage signal acquisition module. The analog output module is used to receive the first voltage signal and generate a standard analog signal based on the first voltage signal, which is then output to an external monitoring module.

6. The ignition device according to claim 5, characterized in that, The analog output module includes a signal modulation unit, an analog-to-digital conversion unit, a signal control unit, and a digital-to-analog conversion unit, wherein: The signal modulation unit is connected to the voltage signal acquisition module. The signal modulation unit is used to receive the first voltage signal and perform signal modulation. The signal modulation includes one or more of filtering, isolation, voltage division and amplification. The analog-to-digital conversion unit is connected to the signal modulation unit, and the analog-to-digital conversion unit is used to convert the first voltage signal modulated by the signal into a digital signal. The signal control unit is connected to the analog-to-digital conversion unit, and the signal control unit is used to calculate the target value corresponding to the amplitude of the second output voltage based on the digital signal; The digital-to-analog conversion unit is connected to the signal control unit, and the digital-to-analog conversion unit is used to convert the target value into the standard analog signal and output it to the external monitoring module.

7. The ignition device according to claim 6, characterized in that, The signal modulation unit includes a filtering subunit, an isolation subunit, a voltage divider subunit, and an amplification subunit, wherein: The filtering subunit is connected to the voltage signal acquisition module, and the filtering subunit is used to filter out noise in the first voltage signal; The isolation subunit is connected to the filtering subunit, and the isolation subunit is used to electrically isolate the first voltage signal. The voltage divider subunit is connected to the isolation subunit, and the voltage divider subunit is used to perform voltage division processing on the first voltage signal; The amplification subunit is connected to the isolation subunit, and the amplification subunit is used to amplify the first voltage signal.

8. The ignition device according to claim 5, characterized in that, The ignition device further includes a switch output module, which is connected to the voltage signal processing module. The switch output module is used to receive the second voltage signal, generate a switch signal, and output it to the external monitoring module.

9. A gas-fired engine, characterized in that, The gas engine includes an ignition device, an ignition controller, and a spark plug as described in any one of claims 1-8, wherein the primary coil of the ignition device is connected to the ignition controller, and the secondary coil of the ignition device is connected to the spark plug.

10. A production equipment, characterized in that, The production equipment includes the gas engine as described in claim 9.

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