Gas equipment detection circuit, gas equipment and gas equipment detection method and device

Abstract

The invention relates to a gas equipment detection circuit, gas equipment, a gas equipment detection method and device, computer equipment, a storage medium and a computer program product. The gas equipment detection circuit comprises a fire detection circuit arranged in a combustion chamber of gas equipment and comprising a magnetic sensitive component; the first end of the magnetic sensitive component is connected with a power supply and the second end is grounded for detecting a magnetic field generated by flame in the combustion chamber; the amplification circuit comprises a positive-phase input end, a negative-phase input end and an amplification signal output end, and is used for amplifying voltage signals input into the positive-phase input end and the negative-phase input end; the positive phase input end is connected with the first end of the magnetic sensitive component, the negative phase input end is grounded, and the amplified signal output end is used for outputting an amplified voltage signal; and the control circuit is connected with the amplified signal output end and is used for feeding back a flame detection result according to the received amplified voltage signal. By adopting the gas equipment detection circuit, the state of flame in the combustion chamber can be accurately detected.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a gas equipment detection circuit, gas equipment, a gas equipment detection method, a device, a computer device, a storage medium and a computer program product. Background Art

[0002] The gas products currently in use are usually provided with an air inlet, a combustion chamber, etc., in which an ignition needle and a fire detection needle are provided. The gas can enter the combustion chamber through the air inlet, and the ignition needle can be ignited by high-voltage discharge to generate a flame in the combustion chamber, while the fire detection needle can be used to check the state of the flame in the combustion chamber, such as whether there is a flame, the size of the flame, etc.

[0003] However, the commonly used metal fire detection needle is prone to bending and deformation after long-term use due to long-term heating and cooling, resulting in the inability to accurately detect the state of the flame in the combustion chamber. Summary of the invention

[0004] Based on this, it is necessary to provide a gas equipment detection circuit, gas equipment, gas equipment detection method, device, computer equipment, storage medium and computer program product to address the technical problem that the metal fire detection needle cannot accurately detect the flame state in the combustion chamber after long-term use.

[0005] In a first aspect, the present application provides a gas equipment detection circuit, comprising:

[0006] The fire detection circuit is arranged in the combustion chamber of the gas equipment, and the fire detection circuit includes a magnetic sensitive component; the first end of the magnetic sensitive component is connected to the power supply, and the second end of the magnetic sensitive component is grounded, and the magnetic sensitive component is used to detect the magnetic field generated by the flame in the combustion chamber;

[0007] The amplifier circuit includes a positive phase input terminal, a negative phase input terminal and an amplified signal output terminal, and is used to amplify the voltage signal input to the positive phase input terminal and the negative phase input terminal; the positive phase input terminal is connected to the first terminal of the magnetic sensitive component, the negative phase input terminal is grounded, and the amplified signal output terminal is used to output the amplified voltage signal;

[0008] The control circuit is connected to the amplified signal output terminal and is used to feed back the flame detection result according to the received amplified voltage signal.

[0009] In one embodiment, the fire detection circuit further comprises:

[0010] A magnetic field detection auxiliary component, the installation distance between the magnetic field detection auxiliary component and the magnetic sensitive component is less than a preset distance, and the magnetic field detection auxiliary component is a magnetic material.

[0011] In one embodiment, the fire detection circuit further comprises:

[0012] The protective shell is used for housing the magnetic sensitive components.

[0013] In one embodiment, the gas equipment detection circuit further includes:

[0014] A load capacitor, wherein a first end of the load capacitor is connected to the amplified signal output end, and a second end of the load capacitor is grounded.

[0015] In one embodiment, the gas equipment detection circuit further includes:

[0016] A positive feedback resistor, wherein a first end of the positive feedback resistor is connected to the amplified signal output end, and a second end of the positive feedback resistor is connected to the non-phase input end.

[0017] In one embodiment, the gas equipment detection circuit further includes:

[0018] A first voltage-dividing component, wherein a first end of the first voltage-dividing component is connected to the amplified signal output end, and a second end of the first voltage-dividing component is connected to the control circuit.

[0019] In one embodiment, the gas equipment detection circuit further includes:

[0020] A second voltage-dividing component, wherein a first end of the second voltage-dividing component is connected to a power source, and a second end of the second voltage-dividing component is connected to a first end of the magnetic sensitive component.

[0021] In one embodiment, the gas equipment detection circuit further includes:

[0022] The filter circuit comprises a filter signal input terminal, a DC output terminal and an AC output terminal; the filter signal input terminal is connected to the second terminal of the second voltage divider component, the DC output terminal is connected to the positive phase input terminal of the amplifier circuit, and the AC output terminal is grounded.

[0023] In a second aspect, the present application provides a gas device, including a combustion chamber and the gas device detection circuit provided in the first aspect.

[0024] The above-mentioned gas equipment detection circuit and the gas equipment including the above-mentioned gas equipment detection circuit can detect the magnetic field generated by the flame in the combustion chamber through the magnetic sensitive components in the fire detection circuit. It can be understood that the magnetic field in the combustion chamber is related to the size of the flame in the combustion chamber, and the resistance value of the magnetic sensitive component is related to the magnetic field around the magnetic sensitive component (that is, the magnetic field in the combustion chamber), and the voltage at both ends of the magnetic sensitive component is related to the resistance value of the magnetic sensitive component. Therefore, the flame state in the combustion chamber can be detected by detecting the relevant voltage at both ends of the magnetic sensitive component. On this basis, the voltage signal measured for the magnetic sensitive component can be amplified and output through the amplifier circuit, so that when the flame in the combustion chamber changes slightly, the control circuit can also sensitively and accurately detect the flame state in the combustion chamber through the amplified voltage signal, and the control circuit can feedback the flame detection result for the flame in the combustion chamber according to the amplified voltage signal. With the above-mentioned gas equipment detection circuit, there is no need to use a metal fire detection needle for detection as in the traditional technology, but the state of the flame in the combustion chamber can be accurately detected by measuring the magnetic sensitive component in the fire detection circuit and outputting the amplified voltage signal after amplification.

[0025] In a third aspect, the present application provides a gas equipment detection method, which is applied to a gas equipment including a gas equipment detection circuit, the gas equipment detection circuit including a fire detection circuit and an amplification circuit, and the gas equipment detection method includes:

[0026] Receive the amplified voltage signal and obtain the preset operating temperature; the amplified voltage signal is measured for the magnetic sensitive components in the fire detection circuit, amplified and output by the amplifier circuit, and the magnetic sensitive components are used to detect the magnetic field generated by the flame in the combustion chamber of the gas equipment;

[0027] According to the preset operating temperature, query the mapping relationship between the voltage signal and the operating temperature to obtain a preset voltage signal matching the preset operating temperature;

[0028] The preset voltage signal is compared with the amplified voltage signal to obtain the flame detection result.

[0029] In one embodiment, an ignition needle and an air inlet are provided in the combustion chamber of the gas device, and the gas device detection method further includes:

[0030] According to the flame detection result, determine the current flame level in the combustion chamber;

[0031] According to the current flame level, query the mapping relationship between the flame level and the working state of the ignition needle to obtain the working state detection result of the ignition needle;

[0032] According to the current flame level, the mapping relationship between the flame level and the air inlet blocking state is queried to obtain the blocking state detection result for the air inlet.

[0033] In a fourth aspect, the present application provides a gas equipment detection device, which is applied to a gas equipment including a gas equipment detection circuit, the gas equipment detection circuit including a fire detection circuit and an amplification circuit, and the gas equipment detection device includes:

[0034] The data acquisition module is used to receive the amplified voltage signal and obtain the preset operating temperature; the amplified voltage signal is measured for the magnetic sensitive components in the fire detection circuit, amplified and output by the amplification circuit, and the magnetic sensitive components are used to detect the magnetic field generated by the flame in the combustion chamber of the gas equipment;

[0035] A preset voltage signal acquisition module is used to query the mapping relationship between the voltage signal and the operating temperature according to the preset operating temperature, and obtain a preset voltage signal matching the preset operating temperature;

[0036] The flame detection result acquisition module is used to compare the preset voltage signal with the amplified voltage signal to obtain the flame detection result.

[0037] In a fifth aspect, the present application further provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the above-mentioned gas equipment detection method when executing the computer program.

[0038] In a sixth aspect, the present application further provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned gas equipment detection method is implemented.

[0039] In a seventh aspect, the present application further provides a computer program product, including a computer program, which implements the above-mentioned gas equipment detection method when executed by a processor.

[0040] The above-mentioned gas equipment detection method, device, computer equipment, storage medium and computer program product, because the magnetic field in the combustion chamber is related to the size of the flame in the combustion chamber, and the resistance value of the magnetic sensitive component in the fire detection circuit is related to the magnetic field around the magnetic sensitive component (that is, the magnetic field in the combustion chamber), and the voltage across the magnetic sensitive component is related to the resistance value of the magnetic sensitive component, therefore, the flame state in the combustion chamber can be detected by detecting the relevant voltage across the magnetic sensitive component. That is, the flame state in the combustion chamber can be sensitively and accurately detected by the amplified voltage signal measured for the magnetic sensitive component in the fire detection circuit, amplified and output by the amplifier circuit, so that the flame detection result for the flame in the combustion chamber can be accurately fed back. With the above-mentioned gas equipment detection method, there is no need to use a metal fire detection needle for detection as in the traditional technology, but the state of the flame in the combustion chamber can be accurately detected by the amplified voltage signal measured for the magnetic sensitive component in the fire detection circuit and output after amplification. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] FIG1 is a schematic diagram of a gas equipment detection circuit in one embodiment;

[0042] FIG2 is a schematic diagram of a fire detection circuit in one embodiment;

[0043] FIG3 is a schematic diagram of a fire detection circuit in a combustion chamber in one embodiment;

[0044] FIG4 is a schematic diagram of a gas equipment detection circuit including a load capacitor in one embodiment;

[0045] FIG5 is a schematic diagram of a gas equipment detection circuit including a positive feedback resistor in one embodiment;

[0046] FIG6 is a schematic diagram of a gas equipment detection circuit including a first voltage divider component in one embodiment;

[0047] FIG7 is a schematic diagram of a gas equipment detection circuit including a second voltage divider component in one embodiment;

[0048] FIG8 is a schematic diagram of a gas equipment detection circuit including a filter circuit in one embodiment;

[0049] FIG9 is a schematic diagram of a filter circuit in one embodiment;

[0050] FIG10 is a schematic diagram of a complete gas equipment detection circuit in one embodiment;

[0051] FIG11 is a schematic diagram of a flow chart of a gas equipment detection method in one embodiment;

[0052] FIG12 is a flow chart of a method for detecting a gas device in another embodiment;

[0053] FIG13 is a block diagram of a gas equipment detection device in one embodiment;

[0054] FIG. 14 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0056] As shown in FIG1 , an embodiment of the present application provides a gas equipment detection circuit. The gas equipment detection circuit includes:

[0057] The fire detection circuit 100 is arranged in the combustion chamber of the gas equipment. The fire detection circuit 100 comprises a magnetic sensitive component 101. The first end of the magnetic sensitive component 101 is connected to the power supply, and the second end of the magnetic sensitive component 101 is grounded. The magnetic sensitive component 101 is used to detect the magnetic field generated by the flame in the combustion chamber.

[0058] The amplifier circuit 200 includes a positive phase input terminal, a negative phase input terminal and an amplified signal output terminal, and is used to amplify the voltage signal input to the positive phase input terminal and the negative phase input terminal; the positive phase input terminal is connected to the first terminal of the magnetic sensitive component, the negative phase input terminal is grounded, and the amplified signal output terminal is used to output the amplified voltage signal;

[0059] The control circuit 300 is connected to the amplified signal output terminal and is used to feed back the flame detection result according to the received amplified voltage signal.

[0060] Among them, the magnetic sensitive component 101 can be specifically a magnetic sensitive resistor made of magnetic sensitive materials, which can convert magnetic signals into electrical signals through the magnetoresistance effect. The magnetoresistance effect specifically refers to: the resistance value of the magnetic sensitive resistor changes with the change of the surrounding magnetic field. Based on this, the principle of using the magnetic sensitive component 101 to detect the flame in the combustion chamber is: when the gas is burning, a large number of positive and negative ions will be generated inside the flame. When the positive and negative ions flow, they will generate a magnetic field. The larger the flame, the greater the magnetic field strength of the magnetic field generated by the combustion, and the change of the magnetic field will cause the resistance value of the magnetic sensitive component 101 in the combustion chamber to change.

[0061] The amplifier circuit 200 may specifically include a voltage amplifier, which can amplify the input voltage into a larger output voltage. In the amplifier circuit 200, the voltage difference between the voltage signals at the positive phase input terminal (high level segment) and the negative phase input terminal (low level segment) is the input voltage of the amplifier circuit 200. In this embodiment, the amplifier circuit 200 can be used to amplify the voltage signal measured for the magnetic sensitive component 101, so that when the relevant voltage at both ends of the magnetic sensitive component 101 is small, the control circuit can also obtain a voltage signal that is easy to detect.

[0062] The control circuit 300 may specifically include a controller, and the controller may analyze the flame detection result for the flame in the combustion chamber according to the received voltage signal in accordance with a preset data analysis program.

[0063] Optionally, a combustion chamber is provided in the gas device, the combustion chamber is connected to the air inlet, and an ignition needle is provided in the combustion chamber. When the user uses the gas device, if the user successfully ignites the gas using the ignition needle, and the air inlet is not blocked, the gas smoothly enters the combustion chamber, then a flame will be generated in the combustion chamber due to the combustion of the gas, and a magnetic field will be generated in the combustion chamber due to the flame. Furthermore, because the fire detection circuit 100 is provided in the combustion chamber of the gas device, the resistance value of the magnetic sensitive component 101 in the fire detection circuit 100 will change under the influence of the magnetic field in the combustion chamber, thereby causing the relevant voltage at both ends of the magnetic sensitive component 101 to change. Then, the amplifier circuit 200 can amplify the voltage signal measured for the magnetic sensitive component 101, and transmit the amplified voltage signal to the control circuit 300, and the control circuit 300 can analyze and feedback the flame detection result for the flame in the combustion chamber based on the received amplified voltage signal according to the preset data analysis program.

[0064] It should be noted that, since the magnetic sensitive component 101 used in this embodiment needs to maintain good performance at high temperatures, the magnetic sensitive material used to make the magnetic sensitive component 101 can be a high temperature resistant magnetic sensitive material, such as a ferrite material with good high temperature stability. Based on this, the magnetic sensitive component 101 can be a ferrite-based magnetoresistor made of ferrite material.

[0065] The above-mentioned gas equipment detection circuit can detect the magnetic field generated by the flame in the combustion chamber through the magnetic sensitive element 101 in the fire detection circuit 100. It can be understood that the magnetic field in the combustion chamber is related to the size of the flame in the combustion chamber, and the resistance value of the magnetic sensitive element 101 is related to the magnetic field around the magnetic sensitive element 101 (that is, the magnetic field in the combustion chamber), and the voltage across the magnetic sensitive element 101 is related to the resistance value of the magnetic sensitive element 101. Therefore, the flame state in the combustion chamber can be detected by detecting the relevant voltage across the magnetic sensitive element 101. On this basis, the voltage signal measured for the magnetic sensitive element 101 can be amplified and output through the amplifier circuit 200, so that when the flame in the combustion chamber changes slightly, the control circuit 300 can also sensitively and accurately detect the flame state in the combustion chamber through the amplified voltage signal, and the control circuit 300 feeds back the flame detection result for the flame in the combustion chamber based on the amplified voltage signal. By using the above-mentioned gas equipment detection circuit, there is no need to use a metal fire detection needle for detection as in traditional technology. Instead, the state of the flame in the combustion chamber can be accurately detected by measuring the magnetic sensitive component 101 in the fire detection circuit 100 and outputting the amplified voltage signal after amplification.

[0066] In one embodiment, based on the gas equipment detection circuit shown in Figure 1, as shown in Figure 2, the fire detection circuit 100 can also include: a magnetic field detection auxiliary component 102, the installation distance between the magnetic field detection auxiliary component 102 and the magnetic sensitive component 101 is less than the preset distance, and the magnetic field detection auxiliary component 102 is a magnetic material.

[0067] The preset distance can be flexibly set according to actual needs, such as any distance between 0.5 cm and 2 cm, to ensure that the magnetic field detection auxiliary component 102 is close to the magnetic sensitive component 101, and the magnetic field generated by the magnetic field detection auxiliary component 102 can be detected by the magnetic sensitive component 101. The magnetic field detection auxiliary component 102 is also in the combustion chamber and can be made of high temperature resistant magnetic material to enhance the magnetic field detected by the magnetic sensitive component 101.

[0068] Optionally, considering that the magnetic field generated by the flame itself is relatively small, although a high-precision, high-sensitivity magnetoresistor can also detect very weak magnetic field changes, in order to further improve the detection accuracy and detection sensitivity of the magnetic sensitive component 101, in this embodiment, a magnetic field detection auxiliary component 102 can be set in the position adjacent to the magnetic sensitive component 101 in the fire detection circuit 100 to enhance the magnetic field in the combustion chamber. Based on this, after the flame in the combustion chamber changes and causes the magnetic field in the combustion chamber to change, the magnetic sensitive component 101 can detect the change in the magnetic field in the combustion chamber more sensitively.

[0069] In this embodiment, a magnetic field detection auxiliary component 102 (magnetic object) adjacent to the magnetic sensitive component 101 can be provided in the fire detection circuit 100 to enhance the magnetic field in the combustion chamber, thereby improving the induction / detection sensitivity of the magnetic sensitive component 101 to the magnetic field in the combustion chamber.

[0070] In one of the embodiments, the fire detection circuit 100 may further include: a protective shell (not shown in FIGS. 1 to 2 ), and the magnetic sensitive component 101 is disposed in the protective shell.

[0071] The protective shell may be made of a high temperature resistant but non-magnetic and non-magnetic sensitive material to avoid affecting the detection sensitivity of the magnetic sensitive detection component 101 .

[0072] Optionally, in order to extend the service life of the magnetic sensitive component 101, in this embodiment, the magnetic sensitive component 101 can be arranged in a protective shell. However, considering that the magnetic field generated by the flame itself is also relatively small, when the protective shell is too thick or the protective shell is a fully enclosed shell, it will affect the detection effect of the magnetic sensitive component 101. Therefore, the thickness of the protective shell can be controlled, for example, the thickness is less than 2 mm or the thickness is less than 1.5 mm. In addition, the protective shell can also be set as a non-fully enclosed shell, which can wrap a part of the magnetic sensitive component 101 to prevent the magnetic sensitive component 101 from directly contacting the flame.

[0073] Exemplarily, in addition to the magnetic sensitive component 101 , the magnetic field detection auxiliary component 102 in the fire detection circuit 100 may also be disposed in a protective housing to increase the service life of the magnetic field detection auxiliary component 102 .

[0074] In one possible implementation, as shown in FIG3 , taking the case where both the magnetic sensitive component 101 and the magnetic field detection auxiliary component 102 are arranged in a protective shell 103, and the magnetic sensitive component 101 is a high-precision magnetoresistor, and the magnetic field detection auxiliary component 102 is a circular magnetic object as an example, a schematic diagram of the fire detection circuit 100 in the combustion chamber is provided. Among them, the magnetic field detection auxiliary component 102 can also be a square or other irregular shape, and the shape and size of the magnetic field detection auxiliary component 102 can be flexibly set according to actual needs. The protective shell 103 can be a non-enclosed shell, and the thickness of the protective shell 103 can be flexibly set according to actual needs.

[0075] In this embodiment, the service life of the magnetic sensitive component 101 can be extended by protecting the housing.

[0076] In some embodiments, based on the gas equipment detection circuit shown in Figure 1, as shown in Figure 4, the gas equipment detection circuit may also include: a load capacitor 400, a first end of the load capacitor 400 is connected to the amplified signal output end of the amplifier circuit 200, and a second end of the load capacitor 400 is grounded.

[0077] Optionally, the load capacitor 400 can be used to improve the ability of the amplifier circuit 200 to resist interference, thereby reducing the oscillation of the gas equipment detection circuit and avoiding damage to the gas equipment detection circuit. The capacitance of the load capacitor 400 can be flexibly set according to actual needs.

[0078] In this embodiment, a load capacitor 400 is connected in series to the amplified signal output terminal of the amplifier circuit 200 and then grounded, which is beneficial to the stable operation of the gas equipment detection circuit.

[0079] In an exemplary embodiment, based on the gas equipment detection circuit shown in Figure 4, as shown in Figure 5, the gas equipment detection circuit may also include: a positive feedback resistor 500, the first end of the positive feedback resistor 500 is connected to the amplified signal output end of the amplifier circuit 200, and the second end of the positive feedback resistor 500 is connected to the non-phase input end of the amplifier circuit 200.

[0080] For a voltage amplifier, “feedback” may specifically refer to: taking a portion of the output voltage of the amplifier as the input voltage of the amplifier.

[0081] Optionally, the resistor connecting the amplified signal output terminal and the non-phase input terminal of the amplifier circuit 200, i.e., the positive feedback resistor 500 of the amplifier circuit 200, can enhance the net input signal of the amplifier circuit 200 and improve the gain of the amplifier circuit 200 to increase the change of the voltage signal output by the amplifier circuit 200. The resistance value of the positive feedback resistor 500 can be flexibly configured according to the requirements of the actual application scenario.

[0082] In this embodiment, considering that the magnetic field change caused by the flame itself is relatively small, resulting in a smaller related voltage change at both ends of the magnetic sensitive element 101, the positive feedback resistor 500 can be configured for the amplifier circuit 200 to increase the change of the voltage signal output by the amplifier circuit 200, that is, to improve the detection sensitivity of the flame in the combustion chamber, so that the control circuit 300 can more sensitively analyze the flame detection result for the flame in the combustion chamber based on the received amplified voltage signal.

[0083] In one embodiment, based on the gas equipment detection circuit shown in Figure 5, as shown in Figure 6, the gas equipment detection circuit may also include: a first voltage divider component 600, the first end of the first voltage divider component 600 is connected to the amplified signal output end of the amplifier circuit 200, and the second end of the first voltage divider component 600 is connected to the control circuit 300.

[0084] The first voltage-dividing component 600 may specifically be a voltage-dividing resistor, and its resistance value may be flexibly configured according to requirements of actual application scenarios.

[0085] In this embodiment, the first voltage divider component 600 can be used to prevent the current in the gas equipment detection circuit from being too large, which is beneficial to the stable operation of the gas equipment detection circuit.

[0086] In one embodiment, based on the gas equipment detection circuit shown in Figure 6, as shown in Figure 7, the gas equipment detection circuit may also include: a second voltage divider component 700, the first end of the second voltage divider component 700 is connected to the power supply, and the second end of the second voltage divider component 700 is connected to the first end of the magnetic sensitive component 101.

[0087] The second voltage-dividing component 700 may specifically be a voltage-dividing resistor, and its resistance value may be flexibly configured according to the requirements of the actual application scenario.

[0088] In this embodiment, the second voltage divider component 700 can be used to prevent the current in the gas equipment detection circuit from being too large, which is beneficial to the stable operation of the gas equipment detection circuit.

[0089] In some embodiments, based on the gas equipment detection circuit shown in Figure 7, as shown in Figure 8, the gas equipment detection circuit may also include: a filter circuit 800, the filter circuit 800 includes a filter signal input terminal, a DC output terminal and an AC output terminal; the filter signal input terminal is connected to the second end of the second voltage divider component 700, the DC output terminal is connected to the non-phase input terminal of the amplifier circuit 200, and the AC output terminal is grounded.

[0090] Optionally, the filter circuit 800 can be used to filter out the AC voltage signal flowing to the amplifier circuit 200. That is, after the voltage signal input to the filter circuit 800 is filtered by the filter circuit 800, the DC voltage signal can be output through the DC output terminal of the filter circuit 800 and transmitted to the non-inverting input terminal of the amplifier circuit 200, while the AC voltage signal is output through the AC output terminal of the filter circuit 800.

[0091] Exemplarily, the filter circuit 800 may be a π-type RC filter circuit, as shown in FIG9 , which provides an internal circuit diagram of the filter circuit 800. The filter circuit 800 may include a filter resistor 801, a first filter capacitor 802, and a second filter capacitor 803. The first end of the filter resistor 801 and the first end of the first filter capacitor 802 are the filter signal input end of the filter circuit 800; the second end of the filter resistor 801 and the second filter capacitor 803 are the DC output end of the filter circuit 800; the second end of the first filter capacitor 802 and the second end of the second filter capacitor 803 are the AC output end of the filter circuit 800.

[0092] In this embodiment, the filter circuit 800 can be used to filter out the AC voltage signal flowing to the amplifier circuit 200, so as to avoid the AC voltage signal being carried in the voltage signal output by the amplifier circuit 200 as much as possible, that is, to reduce the interference signal in the voltage signal output by the amplifier circuit 200, which is beneficial to improving the accuracy of the flame detection result analyzed by the control circuit 300 based on the received voltage signal.

[0093] Based on the gas equipment detection circuits in the above embodiments, as shown in Figure 10, a schematic diagram of a complete gas equipment detection circuit is provided, including: a fire detection circuit 100, an amplifier circuit 200, a control circuit 300, a load capacitor 400, a positive feedback resistor 500 of the amplifier circuit 200, a first voltage divider element 600, a second voltage divider element 700, and a filter circuit 800.

[0094] Specifically, the fire detection circuit 100 may include a magnetic sensitive component 101, a magnetic field detection auxiliary component 102, and a protective shell 103, and the magnetic sensitive component 101 may specifically be a highly sensitive magnetic sensitive resistor. The amplifier circuit 200 may specifically be a voltage amplifier. The control circuit 300 may specifically be a controller. The capacitance of the load capacitor 400 may be flexibly configured according to actual needs, and the resistance value of the positive feedback resistor 500 may also be flexibly configured according to actual needs. The first voltage divider element 600 and the second voltage divider element 700 are both voltage divider resistors, and the resistance value may be flexibly configured according to actual needs. The filter circuit 800 may specifically be a π-type RC filter circuit, including a filter resistor 801, a first filter capacitor 802, and a second filter capacitor 803.

[0095] By using the above-mentioned gas equipment detection circuit, there is no need to use a metal fire detection needle for detection as in traditional technology. Instead, the state of the flame in the combustion chamber can be accurately detected by measuring the magnetic sensitive component 101 in the fire detection circuit 100 and outputting the amplified voltage signal after amplification.

[0096] The present application also provides a gas device in an embodiment, which includes a combustion chamber and the above-mentioned gas device detection circuit. Based on this, during the use of the gas device, the state of the flame in the combustion chamber can be accurately detected by the above-mentioned gas device detection circuit. The gas device includes but is not limited to: a gas water heater, a gas stove, a gas wall-mounted boiler, a gas furnace, a gas generator set, a gas air conditioner, etc.

[0097] The gas equipment detection method provided in the embodiment of the present application can be applied to the gas equipment including the above-mentioned gas equipment detection circuit. Specifically, the controller in the control circuit 300 can receive the amplified voltage signal and obtain the preset operating temperature, wherein the amplified voltage signal is measured for the magnetic sensitive component 101 in the fire detection circuit 100, amplified and output by the amplifier circuit 200, and the magnetic sensitive component 101 is used to detect the magnetic field generated by the flame in the combustion chamber of the gas equipment. Further, the controller can query the mapping relationship between the voltage signal and the operating temperature according to the preset operating temperature, so as to obtain a preset voltage signal matching the preset operating temperature, and then obtain the flame detection result by comparing the preset voltage signal with the amplified voltage signal.

[0098] It should be noted that if a display screen is provided on the gas equipment, the controller can control the display of the flame detection result on the display screen. If a warning light is provided on the gas equipment, the controller can control the color or flashing frequency of the warning light to feedback the flame detection result to the user. If a voice broadcast device is provided on the gas equipment, the controller can control the voice broadcast device to issue a voice reminder to feedback the flame detection result to the user. If the controller can communicate with the terminal device used by the user (an application bound to the gas equipment is installed on the terminal device), the controller can feedback the prompt information in the application to feedback the flame detection result to the user. In this embodiment, the feedback methods that the controller can select include but are not limited to the above.

[0099] In one embodiment, as shown in FIG. 11 , a gas equipment detection method is provided, which is described by taking the method applied to the controller in the control circuit 300 shown in FIG. 10 as an example, and includes the following steps:

[0100] Step 1102, receiving the amplified voltage signal and obtaining the preset operating temperature; the amplified voltage signal is measured for the magnetic sensitive component in the fire detection circuit, amplified and output by the amplifier circuit, and the magnetic sensitive component is used to detect the magnetic field generated by the flame in the combustion chamber of the gas equipment.

[0101] The preset operating temperature is the real-time operating temperature set by the user for the gas equipment.

[0102] Optionally, after the amplifier circuit outputs the amplified voltage signal, the controller in the control circuit can receive the amplified voltage signal and obtain the preset operating temperature. The amplified voltage signal is positively correlated with the resistance value of the magnetic sensitive component. The larger the resistance value of the magnetic sensitive component, the larger the voltage signal input to the amplifier circuit, and the larger the voltage signal (amplified voltage signal) output by the amplifier circuit.

[0103] Step 1104 , according to the preset operating temperature, query the mapping relationship between the voltage signal and the operating temperature to obtain a preset voltage signal matching the preset operating temperature.

[0104] The controller may pre-store a mapping relationship between the voltage signal and the operating temperature, which may be obtained by a tester in advance and stored in the controller. The mapping relationship between the voltage signal and the operating temperature may specifically be: when the air inlet of the gas device is not blocked, if the operating temperature set for the gas device is T1, after the gas device successfully operates, the voltage signal received by the control circuit is U1; if the operating temperature set for the gas device is T2, after the gas device successfully operates, the voltage signal received by the control circuit is U2.

[0105] Optionally, the controller may query a stored mapping relationship between a voltage signal and an operating temperature according to a preset operating temperature, thereby obtaining a preset voltage signal matching the preset operating temperature.

[0106] Step 1106 , comparing the preset voltage signal with the amplified voltage signal to obtain a flame detection result.

[0107] The flame detection result may include: whether there is a flame in the combustion chamber, and whether the flame in the combustion chamber is smaller than when the air inlet is not blocked under the same set operating temperature.

[0108] Optionally, the characteristic of the resistance value of the magnetic sensitive component changing with the magnetic field in the environment can be: the resistance value of the magnetic sensitive component decreases as the magnetic field (flame) in the combustion chamber increases, or: the resistance value of the magnetic sensitive component increases as the magnetic field (flame) in the combustion chamber increases. In this embodiment, magnetic sensitive components with corresponding characteristics can be flexibly selected according to the actual application scenario. Based on this, after receiving the amplified voltage signal, the controller can compare the preset voltage signal with the amplified voltage signal to determine whether the resistance value of the magnetic sensitive component is increased or decreased compared to when the air inlet is not blocked, thereby determining whether there is a flame in the combustion chamber and whether the flame in the combustion chamber is reduced compared to when the air inlet is not blocked, thereby outputting the flame detection result.

[0109] For example, the resistance value of the magnetic sensitive component decreases as the magnetic field in the combustion chamber increases. The larger the flame in the combustion chamber, the smaller the resistance value of the magnetic sensitive component, so that the amplified voltage signal received by the controller is also smaller. Based on this, if the preset operating temperature is T1, when the air inlet is not blocked, the preset voltage signal received by the controller is U1, and when the ignition fails, the resistance value of the magnetic sensitive component is the largest, so that the preset voltage signal received by the controller is U0 (U0>U1). Under this condition, if the amplified voltage signal received by the controller in real time is U2, and U1<U2<U0, the controller can determine that there is a flame in the combustion chamber, but the resistance value of the magnetic sensitive component is increased compared to when the air inlet is not blocked, that is, the flame in the combustion chamber is smaller than when the air inlet is not blocked (indicating that the air inlet of the gas equipment is blocked). If the amplified voltage signal received by the controller in real time is U2, and U2 ≥ U0, the controller can determine that the resistance value of the magnetic sensitive component is similar to the situation when there is no flame, thereby determining that there is no flame in the combustion chamber (indicating that the ignition needle of the gas equipment has failed to ignite).

[0110] For example, the resistance value of the magnetic sensitive component increases as the magnetic field in the combustion chamber increases. The larger the flame in the combustion chamber, the larger the resistance value of the magnetic sensitive component, so that the amplified voltage signal received by the controller is also larger. Based on this, if the preset operating temperature is T1, when the air inlet is not blocked, the preset voltage signal received by the controller is U1, and when the ignition fails, the resistance value of the magnetic sensitive component is the smallest, so that the preset voltage signal received by the controller is U0 (U0 < U1). Under this condition, if the amplified voltage signal received by the controller in real time is U2, and U0 < U2 < U1, the controller can determine that there is a flame in the combustion chamber, but the resistance value of the magnetic sensitive component is reduced compared to when the air inlet is not blocked, that is, the flame in the combustion chamber is smaller than when the air inlet is not blocked (indicating that the air inlet of the gas equipment is blocked). If the amplified voltage signal received by the controller in real time is U2, and U2≤U0, the controller can determine that the resistance value of the magnetic sensitive component is similar to the situation when there is no flame, thereby determining that there is no flame in the combustion chamber (indicating that the ignition needle of the gas equipment has failed to ignite).

[0111] The above-mentioned gas equipment detection method, because the magnetic field in the combustion chamber is related to the size of the flame in the combustion chamber, and the resistance value of the magnetic sensitive component in the fire detection circuit is related to the magnetic field around the magnetic sensitive component (that is, the magnetic field in the combustion chamber), and the voltage across the magnetic sensitive component is related to the resistance value of the magnetic sensitive component, therefore, the flame state in the combustion chamber can be detected by detecting the related voltage across the magnetic sensitive component. That is, the flame state in the combustion chamber can be sensitively and accurately detected by the amplified voltage signal measured for the magnetic sensitive component in the fire detection circuit, amplified and output by the amplifier circuit, so that the flame detection result for the flame in the combustion chamber can be accurately fed back. With the above-mentioned gas equipment detection method, there is no need to use a metal fire detection needle for detection as in the traditional technology, but the state of the flame in the combustion chamber can be accurately detected by the amplified voltage signal measured for the magnetic sensitive component in the fire detection circuit and output after amplification.

[0112] In one embodiment, as shown in FIG12 , the gas equipment detection method may further include:

[0113] Step 1202, determining the current flame level in the combustion chamber according to the flame detection result.

[0114] Optionally, if the flame detection result indicates that there is no flame in the combustion chamber, the controller may determine that the current flame level of the flame in the combustion chamber is the first level (such as "zero level"). If the flame detection result indicates that the flame in the combustion chamber has not decreased compared to when it is not blocked, the controller may determine that the current flame level of the flame in the combustion chamber is the second level (such as "high level"). If the flame detection result indicates that the flame in the combustion chamber has decreased compared to when it is not blocked, the controller may determine that the current flame level of the flame in the combustion chamber is the third level (such as "low level").

[0115] Step 1204, according to the current flame level, query the mapping relationship between the flame level and the working state of the ignition needle to obtain the working state detection result of the ignition needle.

[0116] Optionally, the controller may pre-store a mapping relationship between the flame level and the working state of the ignition needle, so that the mapping relationship between the flame level and the working state of the ignition needle can be queried according to the current flame level detected for the flame in the combustion chamber, and the working state detection result of the ignition needle can be obtained. The working state detection result of the ignition needle includes: whether the working state of the ignition needle is normal or abnormal.

[0117] For example, the mapping relationship between the flame level and the working state of the ignition needle can be specifically: if the flame level is the second level (the flame in the combustion chamber has not decreased compared to when it is not blocked) or the third level (the flame in the combustion chamber has decreased compared to when it is not blocked), it indicates that the ignition needle has successfully ignited (there is flame in the combustion chamber) and the working state of the ignition needle is normal. If the flame level is the first level (there is no flame in the combustion chamber), it indicates that the ignition needle has failed to ignite and the working state of the ignition needle is abnormal.

[0118] Step 1206, according to the current flame level, query the mapping relationship between the flame level and the air inlet blocking state to obtain the blocking state detection result for the air inlet.

[0119] Optionally, the controller may pre-store a mapping relationship between the flame level and the blocked state of the air inlet, so that the mapping relationship between the flame level and the blocked state of the air inlet can be queried according to the current flame level detected for the flame in the combustion chamber, thereby obtaining a detection result of the blocked state of the air inlet. The detection result of the blocked state of the air inlet includes: whether the air inlet is blocked.

[0120] Exemplarily, the mapping relationship between the flame level and the working state of the ignition needle can be specifically: if the flame level is the second level (the flame in the combustion chamber has not decreased compared to when it is not blocked), the air intake port is not blocked; if the flame level is the third level (the flame in the combustion chamber has decreased compared to when it is not blocked), the air intake port is blocked.

[0121] In this embodiment, the flame detection result of the flame in the combustion chamber can be used to accurately detect whether the ignition needle of the gas equipment is working normally and whether the air inlet of the gas equipment is blocked, so that users can find abnormalities of the gas equipment in time and perform maintenance in time.

[0122] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0123] Based on the same inventive concept, the embodiment of the present application also provides a gas equipment detection device for implementing the gas equipment detection method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more gas equipment detection device embodiments provided below can refer to the limitations of the gas equipment detection method above, and will not be repeated here.

[0124] In one embodiment, as shown in FIG13 , a gas equipment detection device is provided, which is applied to a gas equipment including a gas equipment detection circuit, wherein the gas equipment detection circuit includes a flame detection circuit and an amplification circuit. The gas equipment detection device includes: a data acquisition module 1302, a preset voltage signal acquisition module 1304, and a flame detection result acquisition module 1306, wherein:

[0125] The data acquisition module is used to receive the amplified voltage signal and obtain the preset operating temperature; the amplified voltage signal is measured for the magnetic sensitive components in the fire detection circuit, amplified and output by the amplification circuit, and the magnetic sensitive components are used to detect the magnetic field generated by the flame in the combustion chamber of the gas equipment;

[0126] A preset voltage signal acquisition module is used to query the mapping relationship between the voltage signal and the operating temperature according to the preset operating temperature, and obtain a preset voltage signal matching the preset operating temperature;

[0127] The flame detection result acquisition module is used to compare the preset voltage signal with the amplified voltage signal to obtain the flame detection result.

[0128] The above-mentioned gas equipment detection device can detect the flame state in the combustion chamber by detecting the relevant voltages at both ends of the magnetic sensitive component, because the magnetic field in the combustion chamber is related to the size of the flame in the combustion chamber, and the resistance value of the magnetic sensitive component in the fire detection circuit is related to the magnetic field around the magnetic sensitive component (that is, the magnetic field in the combustion chamber), and the voltage at both ends of the magnetic sensitive component is related to the resistance value of the magnetic sensitive component. That is, the flame state in the combustion chamber can be sensitively and accurately detected by measuring the magnetic sensitive component in the fire detection circuit, amplifying and outputting the amplified voltage signal by the amplifier circuit, so that the flame detection result for the flame in the combustion chamber can be accurately fed back. By adopting the above-mentioned gas equipment detection method, there is no need to use a metal fire detection needle for detection as in the traditional technology, but the state of the flame in the combustion chamber can be accurately detected by measuring the magnetic sensitive component in the fire detection circuit and outputting the amplified voltage signal after amplification.

[0129] In one of the embodiments, an ignition needle and an air inlet are provided in the combustion chamber of the above-mentioned gas equipment, and the above-mentioned gas equipment detection device also includes: a flame level determination module, which is used to determine the current flame level in the combustion chamber according to the flame detection result; a working state detection result acquisition module, which is used to query the mapping relationship between the flame level and the working state of the ignition needle according to the current flame level, and obtain the working state detection result for the ignition needle; a blockage state detection result acquisition module, which is used to query the mapping relationship between the flame level and the blockage state of the air inlet according to the current flame level, and obtain the blockage state detection result for the air inlet.

[0130] Each module in the above-mentioned gas equipment detection device can be implemented in whole or in part by software, hardware and their combination. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0131] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be shown in FIG14. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store gas equipment detection data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a gas equipment detection method is implemented.

[0132] Those skilled in the art will understand that the structure shown in FIG. 14 is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0133] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0134] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0135] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0136] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions.

[0137] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0138] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0139] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A gas equipment detection circuit, characterized in that: The circuit comprises: A fire detection circuit, the fire detection circuit is arranged in the combustion chamber of the gas equipment, the fire detection circuit comprises a magnetic sensitive component; a first end of the magnetic sensitive component is connected to a power supply, a second end of the magnetic sensitive component is grounded, and the magnetic sensitive component is used to detect the magnetic field generated by the flame in the combustion chamber; an amplifier circuit, the amplifier circuit comprising a positive phase input terminal, a negative phase input terminal and an amplified signal output terminal, and being used to amplify the voltage signal input to the positive phase input terminal and the negative phase input terminal; the positive phase input terminal is connected to the first terminal of the magnetic sensitive component, the negative phase input terminal is grounded, and the amplified signal output terminal is used to output the amplified voltage signal; A control circuit is connected to the amplified signal output terminal and is used to feed back a flame detection result according to the received amplified voltage signal.

2. The gas equipment detection circuit according to claim 1, characterized in that: The fire detection circuit also includes: A magnetic field detection auxiliary component, wherein the installation distance between the magnetic field detection auxiliary component and the magnetic sensitive component is less than a preset distance, and the magnetic field detection auxiliary component is made of magnetic material.

3. The gas equipment detection circuit according to claim 1, characterized in that: The fire detection circuit also includes: A protective shell, wherein the magnetic sensitive component is arranged in the protective shell.

4. The gas equipment detection circuit according to claim 1, characterized in that: The gas equipment detection circuit also includes: A load capacitor, wherein a first end of the load capacitor is connected to the amplified signal output end, and a second end of the load capacitor is grounded.

5. The gas equipment detection circuit according to claim 1, characterized in that: The gas equipment detection circuit also includes: A positive feedback resistor, wherein a first end of the positive feedback resistor is connected to the amplified signal output end, and a second end of the positive feedback resistor is connected to the non-phase input end.

6. The gas equipment detection circuit according to claim 1, characterized in that: The gas equipment detection circuit also includes: A first voltage-dividing component, wherein a first end of the first voltage-dividing component is connected to the amplified signal output end, and a second end of the first voltage-dividing component is connected to the control circuit.

7. The gas equipment detection circuit according to claim 1, characterized in that: The gas equipment detection circuit also includes: A second voltage-dividing component, wherein a first end of the second voltage-dividing component is connected to the power supply, and a second end of the second voltage-dividing component is connected to the first end of the magnetic sensitive component.

8. The gas equipment detection circuit according to claim 7, characterized in that: The gas equipment detection circuit also includes: A filter circuit, the filter circuit comprising a filter signal input terminal, a DC output terminal and an AC output terminal; The filter signal input terminal is connected to the second end of the second voltage divider component, the DC output terminal is connected to the non-phase input terminal of the amplifier circuit, and the AC output terminal is grounded.

9. A gas equipment, characterized in that: It comprises a combustion chamber and a gas equipment detection circuit as claimed in any one of claims 1 to 8.

10. A gas equipment detection method, characterized in that: Applied to a gas device including a gas device detection circuit, the gas device detection circuit including a fire detection circuit and an amplification circuit, the method comprising: receiving an amplified voltage signal and obtaining a preset operating temperature; the amplified voltage signal is measured for a magnetic sensitive component in the fire detection circuit, amplified and output by the amplifying circuit, and the magnetic sensitive component is used to detect a magnetic field generated by a flame in a combustion chamber of a gas device; According to the preset operating temperature, querying the mapping relationship between the voltage signal and the operating temperature, and obtaining a preset voltage signal matching the preset operating temperature; The preset voltage signal is compared with the amplified voltage signal to obtain a flame detection result.

11. The method according to claim 10, characterized in that An ignition needle and an air inlet are arranged in the combustion chamber of the gas equipment; the method further comprises: determining a current flame level in the combustion chamber according to the flame detection result; According to the current flame level, query the mapping relationship between the flame level and the working state of the ignition needle to obtain the working state detection result of the ignition needle; According to the current flame level, a mapping relationship between the flame level and the air inlet blocking state is queried to obtain a blocking state detection result for the air inlet.

12. A gas equipment detection device, characterized in that: Applicable to a gas device including a gas device detection circuit, wherein the gas device detection circuit includes a fire detection circuit and an amplification circuit, and the device includes: A data acquisition module, used to receive the amplified voltage signal and obtain the preset operating temperature; the amplified voltage signal is measured for the magnetic sensitive component in the fire detection circuit, amplified and output by the amplifying circuit, and the magnetic sensitive component is used to detect the magnetic field generated by the flame in the combustion chamber of the gas equipment; A preset voltage signal obtaining module, used to query the mapping relationship between the voltage signal and the operating temperature according to the preset operating temperature, and obtain a preset voltage signal matching the preset operating temperature; The flame detection result obtaining module is used to compare the preset voltage signal with the amplified voltage signal to obtain a flame detection result.

13. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 10 to 11 are implemented.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 10 to 11 are implemented.

15. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 10 to 11 are implemented.

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