CN113916971A - Flame signal detection adjusting method and device and gas appliance - Google Patents
Flame signal detection adjusting method and device and gas appliance Download PDFInfo
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Abstract
The application relates to a flame signal detection adjusting method and device and a gas appliance. The method comprises the following steps: outputting a first direct current voltage signal according to the voltage conversion signal; acquiring a flame detection actual voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; judging whether the first deviation value is larger than a deviation threshold value; the first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and a flame detection actual voltage value; if the first deviation value is larger than the deviation threshold value, judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value; and if the actual flame detection voltage value is smaller than the flame detection reference voltage value, increasing the voltage conversion signal to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal. By adopting the method, the accuracy of the ion flame signal detection system in the detection process can be improved.
Description
Technical Field
The application relates to the technical field of flame detection, in particular to a flame signal detection adjusting method and device and a gas appliance.
Background
For devices having a combustion apparatus, such as gas appliances such as a gas stove and a gas water heater, it is common to use an ion flame signal detection system to detect a flame for safety. Namely, the gas supply is required to be cut off when no flame exists, and accidents caused by gas leakage are avoided. However, when the conventional ion flame signal detection system detects a flame signal, the flame signal detection environment of the flame probe changes after the flame probe is used for a long time, which easily causes the mismatch of a large change of the actual voltage value of the flame detection but a fixed and constant reference voltage value of the flame detection, and thus the ion flame signal detection system cannot accurately detect the flame signal.
Disclosure of Invention
The invention aims to provide a flame signal detection adjusting method, which can effectively avoid mismatching caused by that the actual voltage value of flame detection is reduced and the reference voltage value of flame detection is fixed due to carbon deposition possibly generated by a flame probe in flame for a long time, and improve the accuracy of an ion flame signal detection system in the detection process.
The second technical problem to be solved by the present invention is to provide an adjusting device for flame signal detection, which can effectively avoid mismatching caused by the fact that the flame detection reference voltage value is fixed due to the fact that the flame probe may generate carbon deposition in the flame for a long time, and improve the accuracy of the ion flame signal detection system in the detection process.
The third technical problem solved by the invention is to provide a gas appliance, which can effectively avoid mismatching caused by that the actual voltage value of flame detection is reduced and the reference voltage value of flame detection is fixed due to carbon deposition possibly generated by a flame probe in flame for a long time, and improve the accuracy of an ion flame signal detection system in the detection process.
The first technical problem is solved by the following technical scheme:
an adjusting method for flame signal detection is applied to an ion flame signal detection system, and the ion flame signal detection system comprises an ion flame signal detection circuit and a controller; the ion flame signal detection circuit is used for connecting the flame probe and the controller; the adjusting method comprises the following steps:
outputting a first direct current voltage signal according to the voltage conversion signal; the first direct current voltage signal is used for controlling the ion flame signal detection circuit to provide working voltage for the flame probe;
acquiring a flame detection actual voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; the feedback signal is an electric signal generated by an ion flame signal detection circuit when the flame probe detects a flame signal;
judging whether the first deviation value is larger than a deviation threshold value; the first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and a flame detection actual voltage value;
if the first deviation value is larger than the deviation threshold value, judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value;
and if the actual flame detection voltage value is smaller than the flame detection reference voltage value, increasing the voltage conversion signal to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal.
The adjusting method for detecting the flame signal outputs a first direct-current voltage signal according to the voltage conversion signal; then, acquiring a flame detection actual voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; then, judging whether the first deviation value is larger than a deviation threshold value; if the first deviation value is larger than the deviation threshold value, judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value; finally, if the actual flame detection voltage value is smaller than the flame detection reference voltage value, increasing the voltage conversion signal to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal; therefore, mismatching caused by that the actual voltage value of flame detection is reduced and the reference voltage value of flame detection is fixed due to the fact that carbon deposition is possibly generated in the flame signal by the flame probe for a long time can be avoided, and the accuracy of the ion flame signal detection system in the detection process is improved.
In one embodiment, the step of determining whether the actual flame detection voltage value is smaller than the reference flame detection voltage value further includes: and if the actual flame detection voltage value is larger than the flame detection reference voltage value, reducing the voltage conversion signal to reduce the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal. Therefore, the embodiment avoids mismatching of flame detection reference voltage value fixation due to the fact that the flame probe generates deviation in the installation process to cause the fact that the actual flame detection voltage value is enlarged, and ensures that the ion flame signal detection system can accurately detect the flame signal, thereby improving the accuracy of the ion flame signal detection system in the detection process.
In one embodiment, the adjusting method further includes: if the first deviation value is less than or equal to the deviation threshold, the voltage conversion signal is maintained. Therefore, when the first deviation value is smaller than or equal to the deviation threshold value, the fact that the actual flame detection voltage value is matched with the fixed flame detection reference voltage value is recognized, the ion flame signal detection system can be guaranteed to accurately detect the flame signal by keeping the voltage conversion signal, and the detection efficiency and the convenience of the ion flame signal detection system in the detection process are improved.
In one embodiment, if the first deviation value is less than or equal to the deviation threshold, the step of holding the voltage conversion signal comprises: if the first deviation value is smaller than or equal to the deviation threshold value and the preset interval time is up, re-acquiring the actual flame detection voltage value, and re-calculating the first deviation value according to the actual flame detection voltage value and the reference flame detection voltage value; and if the recalculated first deviation value is smaller than or equal to the deviation threshold value, maintaining the voltage conversion signal, otherwise, returning to the step of judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value. Therefore, the embodiment avoids the situation that the flame detection actual voltage value is slowly reduced due to aging of the flame probe when the first deviation value is smaller than or equal to the deviation threshold value, but the first deviation value is larger than the deviation threshold value due to the fact that the flame detection actual voltage value obtained according to the feedback signal is greatly changed after the preset interval time, so that the phenomenon that the ion flame signal detection system makes a misjudgment in the flame signal detection process is caused, and the accuracy of the ion flame signal detection system in the detection process is improved.
In one embodiment, the step of outputting the first direct-current voltage signal according to the voltage conversion signal further includes: and when the ion flame signal detection system is powered on, acquiring a pre-stored voltage conversion signal. Therefore, the convenience of the adjustment process of the flame signal detection is improved.
In one embodiment, the step of obtaining the flame detection actual voltage value obtained from the feedback signal output by the ion flame signal detection circuit comprises: acquiring a feedback signal output by the ion flame signal detection circuit; and performing analog-to-digital conversion on the feedback signal to obtain an actual flame detection voltage value. Therefore, an analog-to-digital conversion circuit is not required to be additionally arranged in the ion flame signal detection circuit, and the cost of flame signal detection is reduced.
In one embodiment, if the first deviation value is less than or equal to the deviation threshold, the step of holding the voltage conversion signal comprises: if the first deviation value is less than or equal to the deviation threshold value, the voltage conversion signal is kept, and the voltage conversion signal is stored. Therefore, after the ion flame signal detection system is powered on, the operation can be carried out according to the last stored voltage conversion signal before the power failure, and the convenience of the adjustment process of flame signal detection is improved.
The second technical problem is solved by the following technical solutions:
a flame signal detection adjusting device is applied to an ion flame signal detection system, and the ion flame signal detection system comprises an ion flame signal detection circuit and a controller; the ion flame signal detection circuit is used for connecting the flame probe and the controller; the above-mentioned adjusting device includes:
the signal output module is used for outputting a first direct-current voltage signal according to the voltage conversion signal; the first direct current voltage signal is used for controlling the ion flame signal detection circuit to provide working voltage for the flame probe;
the voltage value acquisition module is used for acquiring an actual flame detection voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; the feedback signal is an electric signal generated by an ion flame signal detection circuit when the flame probe detects a flame signal;
the first judgment module is used for judging whether the first deviation value is greater than a deviation threshold value or not; the first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and a flame detection actual voltage value;
the second judgment module is used for judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value or not when the first deviation value is larger than the deviation threshold value;
and the signal adjusting module is used for increasing the voltage conversion signal when the actual flame detection voltage value is smaller than the flame detection reference voltage value so as to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal.
The adjusting device for detecting the flame signal outputs a first direct-current voltage signal according to the voltage conversion signal; then, acquiring a flame detection actual voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; then, judging whether the first deviation value is larger than a deviation threshold value; if the first deviation value is larger than the deviation threshold value, judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value; finally, if the actual flame detection voltage value is smaller than the flame detection reference voltage value, increasing the voltage conversion signal to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal; therefore, mismatching caused by that the actual voltage value of flame detection is reduced and the reference voltage value of flame detection is fixed due to the fact that carbon deposition is possibly generated in the flame signal by the flame probe for a long time can be avoided, and the accuracy of the ion flame signal detection system in the detection process is improved.
The third technical problem is solved by the following technical scheme:
a gas appliance, characterized in that the gas appliance comprises an ion flame signal detection system, the ion flame signal detection system comprising:
the ion flame signal detection circuit is used for connecting the flame probe and outputting a feedback signal when the flame probe detects a flame signal;
the controller is connected with the ion flame signal detection circuit and used for outputting a first direct-current voltage signal according to the voltage conversion signal; the first direct current voltage signal is used for controlling the ion flame signal detection circuit to provide working voltage for the flame probe; the controller is also used for acquiring a flame detection actual voltage value obtained according to the feedback signal; the controller is also used for judging whether the first deviation value is larger than a deviation threshold value; the first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and a flame detection actual voltage value; the controller is also used for judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value or not when the first deviation value is larger than the deviation threshold value; the controller is further configured to increase the voltage conversion signal to increase the first direct current voltage signal when the actual flame detection voltage value is less than the reference flame detection voltage value.
According to the gas appliance, the controller outputs a first direct-current voltage signal according to the voltage conversion signal; then, acquiring a flame detection actual voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; then, judging whether the first deviation value is larger than a deviation threshold value; if the first deviation value is larger than the deviation threshold value, judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value; finally, if the actual flame detection voltage value is smaller than the flame detection reference voltage value, increasing the voltage conversion signal to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal; therefore, mismatching caused by that the actual voltage value of flame detection is reduced and the reference voltage value of flame detection is fixed due to the fact that carbon deposition is possibly generated in the flame signal by the flame probe for a long time can be avoided, and the accuracy of the ion flame signal detection system in the detection process is improved.
In one embodiment, the controller comprises: the control module is connected with the ion flame signal detection circuit and is used for outputting a voltage conversion signal; the control module is also used for acquiring a flame detection actual voltage value obtained according to the feedback signal; the control module is also used for judging whether the first deviation value is greater than a deviation threshold value; the control module is also used for judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value when the first deviation value is larger than the deviation threshold value; the control module is also used for increasing the voltage conversion signal when the actual flame detection voltage value is smaller than the flame detection reference voltage value so as to increase the first direct current voltage signal; and the voltage conversion module is connected with the control module and the ion flame signal detection circuit and is used for receiving the voltage conversion signal and the second direct current voltage signal, converting the second direct current voltage signal according to the voltage conversion signal and outputting a first direct current voltage signal to the ion flame signal detection circuit so that the ion flame signal detection circuit provides working voltage for the flame probe. Therefore, in the embodiment, the controller is provided with the control module and the voltage conversion module, so that the control module can be connected with the ion flame signal detection circuit through the voltage conversion module, and the safety of the ion flame signal detection system is improved; meanwhile, the voltage conversion module is specially used for voltage conversion processing, so that the operating pressure of the control module is reduced, and the operating efficiency of the ion flame signal detection system is improved.
Drawings
FIG. 1 is a diagram of an exemplary embodiment of a method for adjusting flame signal detection;
FIG. 2 is a block diagram of an ion flame signal detection system according to an embodiment;
FIG. 3 is a first flowchart of an adjustment method for flame signal detection according to an embodiment;
FIG. 4 is a schematic flow chart illustrating the steps of obtaining an actual voltage value for flame detection according to one embodiment;
FIG. 5 is a second flowchart of an adjustment method for flame signal detection according to another embodiment;
FIG. 6 is a third flowchart of an adjustment method for detecting a flame signal according to another embodiment;
FIG. 7 is a flowchart illustrating steps of holding a voltage transition signal in one embodiment;
FIG. 8 is a fourth flowchart illustrating an adjustment method for flame signal detection according to another embodiment;
FIG. 9 is a block diagram of an exemplary adjustment device for detecting a flame signal;
FIG. 10 is an internal block diagram of a controller in one embodiment;
FIG. 11 is a schematic diagram of a first configuration of an ion flame signal detection system in accordance with an embodiment;
FIG. 12 is a second schematic diagram of an embodiment of an ion flame signal detection system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Unless defined otherwise, 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 herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
The embodiment of the application provides a flame signal detection adjusting method and device, computer equipment, a gas appliance and a storage medium, and improves the accuracy of an ion flame signal detection system in the detection process.
Next, a brief description will be given of an adjustment method of flame signal detection provided in an embodiment of the present application. As shown in fig. 1, the application environment is an ion flame signal detection system, which includes an ion flame signal detection circuit 100 and a controller 200; the ionic flame signal detection circuit 100 is used to connect the flame probe to the controller 200.
In one particular example, as shown in fig. 2, the ionic flame signal detection circuit 100 includes an oscillating boost module 110 and an ionic flame signal detection module 120. The oscillation boosting module 110 is used for connecting the controller 200 and the ion flame signal detection module 120; the ion flame signal detection module 120 is used to connect the flame probe to the controller 200.
The oscillation boosting module 110 is configured to receive the first dc voltage signal output by the controller 200 and a third dc voltage signal provided by an external power supply, use the first dc voltage signal as a power supply voltage, and perform self-oscillation and boosting processing on the third dc voltage signal to output a first ac voltage signal. The ion flame signal detection module 120 is configured to connect the oscillation voltage boost module 110 and the flame probe and provide an operating voltage to the flame probe when receiving the first ac voltage signal.
The ion flame signal detection module 120 is further configured to output a feedback signal when the flame probe detects a flame signal; the feedback signal is an electric signal generated by an ion flame signal detection circuit when a flame probe detects a flame signal;
the controller 200 is configured to determine whether a flame signal exists in a gas appliance corresponding to the ion flame signal detection system according to the actual flame detection voltage value and the reference flame detection voltage value. The above is only a specific example, and the practical application can be flexibly set according to requirements, and is not limited herein.
In one embodiment, as shown in fig. 3, a method for adjusting flame signal detection is provided, which is illustrated by applying the method to the ion flame signal detection system in fig. 1, and includes steps 202 to 210.
The controller 200 may convert the power supply voltage signal of the controller 200 according to the voltage conversion signal, and output a first direct current voltage signal to the ion flame signal detection circuit 100. The first direct current voltage signal is used to control the ionic flame signal detection circuit 100 to provide the operating voltage to the flame probe. In a specific example, the voltage conversion signal may be, but is not limited to, a voltage conversion value, which is only a specific example, and may be flexibly set according to a requirement in an actual application, and is not limited herein. In a specific example, when the ion flame signal detection system is powered on, the pre-stored voltage conversion signal may be obtained by the controller 200, which is only a specific example, and the voltage conversion signal may be flexibly set according to requirements in practical applications, and is not limited herein.
And 204, acquiring a flame detection actual voltage value obtained according to a feedback signal output by the ion flame signal detection circuit.
The feedback signal is an electrical signal generated by the ion flame signal detection circuit 100 when the flame probe detects the flame signal. After the controller 200 outputs the first direct-current voltage signal to the ion flame signal detection circuit 100, so as to control the ion flame signal detection circuit 100 to provide the working voltage to the flame probe, the ion flame signal detection circuit 100 outputs a feedback signal when the flame probe detects the flame signal, and the controller 200 may obtain the actual flame detection voltage value obtained according to the feedback signal. In one particular example, the feedback signal may be an analog electrical signal generated by the ion flame signal detection circuit 100 when the flame signal is detected by the flame probe; the controller 200 performs analog-to-digital conversion on the analog electrical signal to obtain an actual voltage value for flame detection. The feedback signal can also be a digital electric signal generated by the ion flame signal detection circuit 100 and an external analog-to-digital conversion circuit when the flame signal is detected by the flame probe, and the actual flame detection voltage value can be obtained according to the digital signal; the above is only a specific example, and the practical application can be flexibly set according to requirements, and is not limited herein.
In one embodiment, as shown in fig. 4, the step of obtaining the flame detection actual voltage value obtained from the feedback signal output by the ion flame signal detection circuit includes:
And 402, performing analog-to-digital conversion on the feedback signal to obtain an actual flame detection voltage value.
When the feedback signal is an analog electric signal generated by the ion flame signal detection circuit 100 when the flame signal is detected by the flame probe, the controller 200 acquires the feedback signal output by the ion flame signal detection circuit 100, and performs analog-to-digital conversion on the feedback signal to obtain an actual flame detection voltage value; therefore, an analog-to-digital conversion circuit does not need to be additionally arranged in the ion flame signal detection circuit 100, and the cost of flame signal detection is reduced.
In step 206, it is determined whether the first deviation value is greater than a deviation threshold.
In step 208, if the first deviation value is greater than the deviation threshold, it is determined whether the actual voltage value of the flame detection is less than the reference voltage value of the flame detection.
The first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and a flame detection actual voltage value. The controller 200 obtains a first deviation value according to a preset flame detection reference voltage value and a flame detection actual voltage value, and judges whether the first deviation value is greater than a deviation threshold value; then, when the first deviation value is greater than the deviation threshold value, it indicates that the actual flame detection voltage value is changed greatly and is not matched with the fixed flame detection reference voltage value, and the controller 200 needs to further determine whether the actual flame detection voltage value is smaller than the flame detection reference voltage value.
In one particular example, the deviation threshold may be preset in the ion flame signal detection system; the above is only a specific example, and the practical application can be flexibly set according to requirements, and is not limited herein.
In one embodiment, the first deviation value is determined according to the following expression:
δ＝|α-β|
wherein, δ is a first deviation value; alpha is a flame detection reference voltage value; beta is the actual voltage value of flame detection.
And step 210, if the actual flame detection voltage value is smaller than the flame detection reference voltage value, increasing the voltage conversion signal to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal.
When the first deviation value is greater than the deviation threshold value and the actual flame detection voltage value is smaller than the reference flame detection voltage value, for example, it indicates that carbon deposition may be generated in the flame by the flame probe for a long time to reduce the actual flame detection voltage value, the controller 200 increases the voltage conversion signal to increase the first direct current voltage signal, and returns to the step of outputting the first direct current voltage signal according to the voltage conversion signal; after the voltage conversion signal is increased, the controller 200 obtains the actual flame detection voltage value obtained according to the feedback signal output by the ion flame signal detection circuit and approaches the flame detection reference voltage value, so that the mismatching caused by the fact that the actual flame detection voltage value is reduced and the flame detection reference voltage value is fixed due to the fact that carbon deposition is possibly generated in the flame signal by the flame probe for a long time is avoided, and the ion flame signal detection system can accurately detect the flame signal. The flame detection reference voltage value can be preset and stored, and is determined according to a combustion device where the ion flame signal detection system is located.
The adjusting method for detecting the flame signal outputs a first direct-current voltage signal according to the voltage conversion signal; then, acquiring a flame detection actual voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; then, judging whether the first deviation value is larger than a deviation threshold value; if the first deviation value is larger than the deviation threshold value, judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value; finally, if the actual flame detection voltage value is smaller than the flame detection reference voltage value, increasing the voltage conversion signal to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal; therefore, mismatching caused by that the actual voltage value of flame detection is reduced and the reference voltage value of flame detection is fixed due to the fact that carbon deposition is possibly generated in the flame signal by the flame probe for a long time can be avoided, and the accuracy of the ion flame signal detection system in the detection process is improved.
In one embodiment, as shown in fig. 5, the step of determining whether the actual flame detection voltage value is smaller than the reference flame detection voltage value further includes:
and 212, if the actual flame detection voltage value is larger than the flame detection reference voltage value, reducing the voltage conversion signal to reduce the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal.
When the first deviation value is greater than the deviation threshold value and the actual flame detection voltage value is greater than the reference flame detection voltage value, for example, indicating that the actual flame detection voltage value becomes larger due to deviation occurring in the installation process of the flame probes installed in different equipment of the same type at the time, the controller 200 decreases the voltage conversion signal to decrease the first direct current voltage signal, and returns to the step of outputting the first direct current voltage signal according to the voltage conversion signal; after the voltage conversion signal is reduced, the controller 200 obtains the actual flame detection voltage value obtained according to the feedback signal output by the ion flame signal detection circuit and approaches to the flame detection reference voltage value, the mismatching of the flame detection reference voltage value fixed and formed due to the fact that the actual flame detection voltage value is increased due to the fact that the flame probe is installed to the gas appliance in the process of deviation is avoided, the ion flame signal detection system can accurately detect the flame signal, and therefore the accuracy of the ion flame signal detection system in the detection process is improved.
In one embodiment, as shown in fig. 6, the adjusting method further includes:
in step 214, the voltage conversion signal is maintained if the first deviation value is less than or equal to the deviation threshold.
When the first deviation value is less than or equal to the deviation threshold value, it indicates that the actual voltage value of the flame detection is equivalent to the reference voltage value of the flame detection, and there is no case where the actual voltage value of the flame detection is reduced due to carbon deposition possibly generated by the flame probe in the flame signal for a long time or the actual voltage value of the flame detection is increased due to deviation generated in the installation process of the flame probe installed in different devices of the same type, so that the controller 200 maintains the voltage conversion signal, thereby maintaining the first direct current voltage signal without adjustment. Therefore, when the first deviation value is smaller than or equal to the deviation threshold value, the fact that the actual flame detection voltage value is matched with the fixed flame detection reference voltage value is recognized, the ion flame signal detection system can be guaranteed to accurately detect the flame signal by keeping the voltage conversion signal, and the detection efficiency and the convenience of the ion flame signal detection system in the detection process are improved.
In one embodiment, as shown in fig. 7, if the first deviation value is less than or equal to the deviation threshold, the step of holding the voltage conversion signal includes:
and 701, if the first deviation value is smaller than or equal to the deviation threshold value and the preset interval time is reached, re-acquiring the actual flame detection voltage value, and re-calculating the first deviation value according to the actual flame detection voltage value and the reference flame detection voltage value.
And step 702, if the recalculated first deviation value is smaller than or equal to the deviation threshold value, maintaining the voltage conversion signal, otherwise, returning to the step of judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value.
When the first deviation value is smaller than or equal to the deviation threshold value and the preset interval time is up, namely when the flame probe and the application environment thereof are relatively stable, the controller 200 acquires the actual flame detection voltage value again, and recalculates the first deviation value according to the acquired actual flame detection voltage value and the fixed flame detection reference voltage value; further, the recalculated first deviation value is compared with the deviation threshold value again, and the voltage conversion signal is maintained when the recalculated first deviation value is less than or equal to the deviation threshold value; and when the recalculated first deviation value is larger than the deviation threshold value, returning to the step of judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value, and carrying out corresponding adjustment. In a specific example, the flame detection actual voltage value may still be obtained again once or multiple times within a preset interval time, the first deviation value is recalculated according to the flame detection actual voltage value and the flame detection reference voltage value, and the step of determining whether the first deviation value is greater than the deviation threshold is returned.
In this embodiment, when the first deviation value is less than or equal to the deviation threshold and the preset interval time is reached, the controller 200 re-obtains the actual flame detection voltage value, and re-calculates the first deviation value according to the actual flame detection voltage value and the reference flame detection voltage value; then, when the recalculated first deviation value is smaller than or equal to the deviation threshold value, maintaining the voltage conversion signal, otherwise, returning to the step of judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value; the flame signal detection method and the flame signal detection device have the advantages that the flame signal detection system can avoid the phenomenon that the error judgment of the ion flame signal detection system occurs in the flame signal detection process due to the fact that the flame detection actual voltage value is slowly reduced due to aging, the first deviation value is larger than the deviation threshold value due to the fact that the flame detection actual voltage value obtained according to the feedback signal is greatly changed after the preset interval time under the condition that the first deviation value is smaller than or equal to the deviation threshold value, and the accuracy of the ion flame signal detection system in the detection process is improved.
In one embodiment, as shown in fig. 8, the step of outputting the first direct-current voltage signal according to the voltage conversion signal further includes:
When the ion flame signal detection system is powered on, the controller 200 acquires the pre-stored voltage conversion signal, so that the first direct-current voltage signal is output according to the voltage conversion signal, and the convenience of the adjustment process of flame signal detection is improved.
In one embodiment, if the first deviation value is less than or equal to the deviation threshold, the step of holding the voltage conversion signal comprises:
if the first deviation value is less than or equal to the deviation threshold value, the voltage conversion signal is kept, and the voltage conversion signal is stored.
When the first deviation value is smaller than or equal to the deviation threshold value, the controller 200 keeps the voltage conversion signal and stores the voltage conversion signal, so that the ion flame signal detection system can operate according to the last stored voltage conversion signal before power failure after being powered on, and the convenience of the adjustment process of flame signal detection is improved.
It should be understood that although the various steps in the flow charts of fig. 3-8 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 3-8 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 9 and with reference to fig. 1, an adjusting apparatus for flame signal detection is provided, which is applied to an ion flame signal detection system, and the ion flame signal detection system includes an ion flame signal detection circuit 100 and a controller 200; the ion flame signal detection circuit 100 is used for connecting the flame probe and the controller 200; the adjusting apparatus includes a signal output module 910, a voltage value obtaining module 920, a first determining module 930, a second determining module 940, and a signal adjusting module 950.
The signal output module 910 is configured to output a first direct-current voltage signal according to the voltage conversion signal; the first direct current voltage signal is used for controlling the ion flame signal detection circuit to provide working voltage for the flame probe; the voltage value obtaining module 920 is configured to obtain an actual voltage value of flame detection obtained according to a feedback signal output by the ion flame signal detection circuit; the feedback signal is an electric signal generated by an ion flame signal detection circuit when the flame probe detects a flame signal; the first determining module 930 is configured to determine whether the first deviation value is greater than a deviation threshold; the first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and a flame detection actual voltage value; the second determining module 940 is configured to determine whether the actual voltage value of flame detection is smaller than the reference voltage value of flame detection when the first deviation value is larger than the deviation threshold; the signal adjusting module 950 is configured to increase the voltage conversion signal to increase the first direct-current voltage signal when the actual flame detection voltage value is smaller than the flame detection reference voltage value, and return to the step of outputting the first direct-current voltage signal according to the voltage conversion signal.
In one embodiment, the signal adjusting module 950 is further configured to decrease the voltage conversion signal to decrease the first dc voltage signal if the actual voltage value of the flame detection is greater than the reference voltage value of the flame detection, and return to the step of outputting the first dc voltage signal according to the voltage conversion signal.
In one embodiment, the signal adjusting module 950 is further configured to hold the voltage converting signal if the first deviation value is less than or equal to the deviation threshold.
In one embodiment, the signal adjustment module 950 includes a deviation calculation unit and a signal adjustment unit. The deviation calculating unit is used for acquiring the actual flame detection voltage value again if the first deviation value is smaller than or equal to the deviation threshold value and the preset interval time is up, and recalculating the first deviation value according to the actual flame detection voltage value and the reference flame detection voltage value; and the signal adjusting unit is used for keeping the voltage conversion signal if the recalculated first deviation value is less than or equal to the deviation threshold value, and returning to the step of judging whether the actual flame detection voltage value is less than the flame detection reference voltage value or not if the first deviation value is not less than the deviation threshold value.
In one embodiment, the flame signal detection adjusting device further comprises a voltage conversion signal acquisition module; the voltage conversion signal acquisition module is used for acquiring a pre-stored voltage conversion signal when the ion flame signal detection system is powered on.
In one embodiment, the voltage value obtaining module 920 includes a feedback signal obtaining unit and an analog-to-digital conversion unit. The feedback signal acquisition unit is used for acquiring a feedback signal output by the ion flame signal detection circuit; the analog-to-digital conversion unit is used for performing analog-to-digital conversion on the feedback signal to obtain an actual flame detection voltage value.
In one embodiment, the signal adjusting unit is further configured to hold the voltage converting signal and store the voltage converting signal if the first deviation value is less than or equal to the deviation threshold.
For the specific definition of the adjusting means for flame signal detection, reference may be made to the above definition of the adjusting method for flame signal detection, which is not described herein again. The modules in the adjusting device for detecting the flame signal can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a controller is provided, the internal structure of which may be as shown in fig. 10. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the controller comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the controller is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to realize a flame detection setting voltage value adjusting method. The display screen of the controller can be a liquid crystal display screen or an electronic ink display screen, and the input device of the controller can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the controller, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the configuration shown in fig. 10 is a block diagram of only a portion of the configuration associated with the present application and does not constitute a limitation on the controller to which the present application is applied, and that a particular controller may include more or less components than those shown, or combine certain components, or have a different arrangement of components.
In an embodiment, a controller is provided, the controller comprising a memory and a processor, the memory storing a computer program which when executed by the processor implements the steps of any of the above method embodiments.
In one embodiment, as shown in FIG. 1, a gas appliance is provided that includes an ionic flame signal detection system. The ion flame signal detection system comprises an ion flame signal detection circuit 100 and a controller 200; the controller 200 is connected to the ion flame signal detection circuit 100.
The ion flame signal detection circuit 100 is configured to connect to a flame probe, and output a feedback signal when the flame probe detects a flame signal.
In one embodiment, as shown in FIG. 2, the ionic flame signal detection circuit 100 includes an oscillating boost module 110 and an ionic flame signal detection module 120.
The oscillation boosting module 110 is configured to receive the first dc voltage signal output by the controller 200 and a third dc voltage signal provided by an external power supply, use the first dc voltage signal as a power supply voltage, and perform self-oscillation and boosting processing on the third dc voltage signal to output a first ac voltage signal. The ion flame signal detection module 120 is configured to connect the oscillation voltage boost module 110 and the flame probe and provide an operating voltage to the flame probe when receiving the first ac voltage signal.
In one embodiment, as shown in FIG. 11, the oscillating boost module 110 includes a booster E1Feedback coil L1A first resistor R1A first capacitor C1And a triode T1。
Wherein the feedback coil L1The first end is connected with the controller 200; feedback coil L1Is connected with the first resistor R1A first end of (a); a first resistor R1Second terminal and first capacitor C1The first end of the tube is connected with a third tube T1A base electrode of (1); a first capacitor C1Second terminal of (3), triode T1Emitter and booster E1The first end of the secondary coil of (a) is grounded; triode T1Collector electrode of (2) is connected to the booster E1A first end of the primary coil of (a); voltage booster E1The second end of the primary coil is used for connecting a power supply Vcc2For receiving a third dc voltage signal; voltage booster E1Is used to connect to the ionic flame signal detection module 120.
In the present embodiment, the feedback coil L1And a voltage booster E1The primary coil and the secondary coil form the same circuit module, and the feedback coil L1After the first end of the transistor T receives the first dc voltage signal output by the controller 200, the transistor T1Through a feedback coil L as an oscillating coil1Electrifying the triode T1Is conducted with the collector and emitter, and a voltage booster E1Is energized, step-up transformer E1The secondary coil of the transformer forms boosting through coil coupling, and therefore an electric signal is generated; feedback coil L1When the feedback coil L generates a voltage difference1When a voltage difference is formed, the triode T1The current received by the base electrode becomes small, so that the triode T1The collector and emitter are cut off byAfter self-oscillation is formed, the first direct-current voltage signal is received and then repeated, so that the voltage is boosted by a booster E1Outputs a first ac voltage signal to the ion flame signal detection module 120.
The ion flame signal detection module 120 is further configured to output a feedback signal when the flame probe detects a flame signal; wherein, the feedback signal is an electrical signal generated by the ion flame signal detection circuit 100 when the flame signal is detected by the flame probe;
in one embodiment, as shown in FIG. 11, the ion flame signal detection module 120 includes a second capacitor C2A third capacitor C3A third resistor R3A fourth resistor R4A fifth resistor R5A sixth resistor R6A seventh resistor R7A first diode D1And a second diode D2。
Wherein the second capacitor C2Is used for connecting the oscillation boosting module 110 and the second capacitor C2Is connected with a third resistor R3First terminal and fourth resistor R4A first terminal of (3), a third resistor R3A second end for connecting a flame probe, a fourth resistor R4Second terminal, fifth resistor R5First terminal, sixth resistor R6Second terminal, first diode D1Anode of (2), second diode D2Cathode and third capacitor C3First terminal and seventh resistor R7Is connected to a first terminal of a first diode D1And a sixth resistor R6Is used for connecting a power supply Vcc3Third capacitor C3First terminal of, second diode D2And a fifth resistor R5The second terminal of (1) is grounded; a seventh resistor R7Is connected to the controller 200.
In the present embodiment, the second capacitor C is used2Receives the first ac voltage signal output by the oscillating voltage-boosting module 110, and couples the first ac voltage signal. When the flame probe does not detect the flame signal, the coupled first alternating voltage signal has no negativeThe equivalent diode rectifying signal generated by the electric ions is at the third resistor R3And a second capacitor C2The DC voltage signal generated between the two is 0, and the feedback signal is supplied by power supply Vcc3The provided direct current voltage signal passes through a fifth resistor R5And R6Partial pressure generation by R7Outputs the feedback signal to the controller 200; when the flame probe detects the flame signal, the coupled first alternating voltage signal passes through the third resistor R3Then, a negative voltage rectification circuit formed by an equivalent diode generated by negative ions of the flame probe and the flame signal to the ground generates a rectified direct current voltage signal; the rectified DC voltage signal passes through a fourth resistor R4And a fifth resistor R5Form a parallel connection and then with a sixth resistor R6Form a divided voltage, and the voltage value formed by the divided voltage passes through a seventh resistor R7Outputs the feedback signal to the controller 200; first diode D1And a second diode D2The circuit is used as a clamp to prevent the flame detection port of the controller from being damaged by overhigh instantaneous pulse voltage; third capacitor C3Has buffering effect, and when there is spike pulse, the spike pulse voltage is buffered, so that the input voltage is stable. The controller 200 is configured to output a first direct-current voltage signal according to the voltage conversion signal; the first direct current voltage signal is used for controlling the ion flame signal detection circuit 100 to provide working voltage for the flame probe; the controller 200 is further configured to obtain an actual flame detection voltage value obtained according to the feedback signal; the controller 200 is further configured to determine whether the first deviation value is greater than a deviation threshold; the first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and a flame detection actual voltage value; the controller 200 is further configured to determine whether the actual voltage value for flame detection is less than the reference voltage value for flame detection when the first deviation value is greater than the deviation threshold; the controller 200 is further configured to increase the voltage conversion signal to increase the first direct current voltage signal when the actual flame detection voltage value is less than the reference flame detection voltage value.
In this embodiment, the controller 200 outputs a first direct current voltage signal according to the voltage conversion signal; then, acquiring a flame detection actual voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; then, judging whether the first deviation value is larger than a deviation threshold value; if the first deviation value is larger than the deviation threshold value, judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value; and finally, if the actual flame detection voltage value is smaller than the flame detection reference voltage value, increasing the voltage conversion signal to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal. Therefore, mismatching caused by that the actual voltage value of flame detection is reduced and the reference voltage value of flame detection is fixed due to the fact that carbon deposition is possibly generated in the flame signal by the flame probe for a long time can be avoided, and the accuracy of the ion flame signal detection system in the detection process is improved.
In one embodiment, as shown in FIG. 12, the controller 200 includes a control module 210 and a voltage conversion module 220. The control module 210 is connected with the ion flame signal detection circuit 100, and the voltage conversion module is connected with the control module 210 and the ion flame signal detection circuit 100.
The control module 210 is configured to output a voltage conversion signal; the control module 210 is further configured to obtain an actual flame detection voltage value obtained according to the feedback signal; the control module 210 is further configured to determine whether the first deviation value is greater than a deviation threshold; the control module 210 is further configured to determine whether the actual voltage value of the flame detection is smaller than the reference voltage value of the flame detection when the first deviation value is larger than the deviation threshold; the control module 210 is further configured to increase the voltage conversion signal to increase the first direct-current voltage signal when the actual flame detection voltage value is smaller than the reference flame detection voltage value;
the voltage conversion module 220 is used for receiving the voltage conversion signal and the power supply Vcc1And the provided second direct-current voltage signal is converted according to the voltage conversion signal, and the first direct-current voltage signal is output to the ion flame signal detection circuit 100, so that the ion flame signal detection circuit 100 provides working voltage for the flame probe.
In this embodiment, by setting the controller 200 as the control module 210 and the voltage conversion module 220, the control module 210 can be connected to the ion flame signal detection circuit 100 through the voltage conversion module 220, so as to improve the safety of the ion flame signal detection system; meanwhile, the voltage conversion module 220 is used for specially performing voltage conversion processing, so that the operation pressure of the control module 210 is reduced, and the operation efficiency of the ion flame signal detection system is improved.
In one embodiment, the control module 210 is a first single-chip microcomputer.
In one embodiment, the voltage conversion module 220 is a second single chip.
In an embodiment, a computer-readable storage medium is provided, having stored thereon a computer program, which when executed by a processor, carries out the steps of any of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The adjusting method for flame signal detection is characterized by being applied to an ion flame signal detection system, wherein the ion flame signal detection system comprises an ion flame signal detection circuit and a controller; the ion flame signal detection circuit is used for connecting the flame probe and the controller; the adjusting method comprises the following steps:
outputting a first direct current voltage signal according to the voltage conversion signal; the first direct current voltage signal is used for controlling the ion flame signal detection circuit to provide working voltage for the flame probe;
acquiring a flame detection actual voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; the feedback signal is an electric signal generated by the ion flame signal detection circuit when the flame probe detects a flame signal;
judging whether the first deviation value is larger than a deviation threshold value; the first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and the actual flame detection voltage value;
if the first deviation value is larger than the deviation threshold value, judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value;
and if the actual flame detection voltage value is smaller than the reference flame detection voltage value, increasing the voltage conversion signal to increase the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal.
2. The method of claim 1, wherein the step of determining whether the actual flame detection voltage value is less than the reference flame detection voltage value is further followed by:
and if the actual flame detection voltage value is larger than the reference flame detection voltage value, reducing the voltage conversion signal to reduce the first direct current voltage signal, and returning to the step of outputting the first direct current voltage signal according to the voltage conversion signal.
3. The method of claim 1, wherein the adjusting method further comprises:
and if the first deviation value is smaller than or equal to the deviation threshold value, maintaining the voltage conversion signal.
4. The method of claim 3, wherein the step of holding the voltage conversion signal if the first deviation value is less than or equal to the deviation threshold comprises:
if the first deviation value is smaller than or equal to the deviation threshold value and the preset interval time is reached, re-acquiring the actual flame detection voltage value, and re-calculating the first deviation value according to the actual flame detection voltage value and the reference flame detection voltage value;
if the recalculated first deviation value is smaller than or equal to the deviation threshold value, the voltage conversion signal is kept, otherwise, the step of judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value is returned.
5. The method of claim 1, wherein the step of outputting the first direct current voltage signal according to the voltage converted signal is preceded by the step of:
and when the ion flame signal detection system is powered on, the pre-stored voltage conversion signal is acquired.
6. The method of claim 1, wherein the step of obtaining an actual voltage value of the flame detection derived from the feedback signal output by the ion flame signal detection circuit comprises:
acquiring the feedback signal output by the ion flame signal detection circuit;
and performing analog-to-digital conversion on the feedback signal to obtain the actual flame detection voltage value.
7. The method of claim 3, wherein the step of holding the voltage conversion signal if the first deviation value is less than or equal to the deviation threshold comprises:
if the first deviation value is less than or equal to the deviation threshold value, the voltage conversion signal is maintained, and the voltage conversion signal is stored.
8. The adjusting device for flame signal detection is characterized in that the adjusting device is applied to an ion flame signal detection system, and the ion flame signal detection system comprises an ion flame signal detection circuit and a controller; the ion flame signal detection circuit is used for connecting the flame probe and the controller; the adjusting device comprises:
the signal output module is used for outputting a first direct-current voltage signal according to the voltage conversion signal; the first direct current voltage signal is used for controlling the ion flame signal detection circuit to provide working voltage for the flame probe;
the voltage value acquisition module is used for acquiring an actual flame detection voltage value obtained according to a feedback signal output by the ion flame signal detection circuit; the feedback signal is an electric signal generated by the ion flame signal detection circuit when the flame probe detects a flame signal;
the first judgment module is used for judging whether the first deviation value is greater than a deviation threshold value or not; the first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and the actual flame detection voltage value;
the second judgment module is used for judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value or not when the first deviation value is larger than the deviation threshold value;
and the signal adjusting module is used for increasing the voltage conversion signal when the actual flame detection voltage value is smaller than the reference flame detection voltage value so as to increase the first direct-current voltage signal and returning to the step of outputting the first direct-current voltage signal according to the voltage conversion signal.
9. A gas appliance, comprising an ion flame signal detection system, the ion flame signal detection system comprising:
the ion flame signal detection circuit is used for connecting the flame probe and outputting a feedback signal when the flame probe detects a flame signal;
the controller is connected with the ion flame signal detection circuit and used for outputting a first direct-current voltage signal according to the voltage conversion signal; the first direct current voltage signal is used for controlling the ion flame signal detection circuit to provide working voltage for the flame probe; the controller is also used for acquiring a flame detection actual voltage value obtained according to the feedback signal; the controller is further configured to determine whether the first deviation value is greater than a deviation threshold; the first deviation value is an absolute value of a difference value between a preset flame detection reference voltage value and the actual flame detection voltage value; the controller is further used for judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value or not when the first deviation value is larger than the deviation threshold value; the controller is further configured to increase the voltage conversion signal to increase the first direct current voltage signal when the actual flame detection voltage value is less than the reference flame detection voltage value.
10. The gas appliance of claim 9, wherein the controller comprises:
the control module is connected with the ion flame signal detection circuit and is used for outputting the voltage conversion signal; the control module is also used for acquiring a flame detection actual voltage value obtained according to the feedback signal; the control module is also used for judging whether the first deviation value is greater than a deviation threshold value; the control module is further used for judging whether the actual flame detection voltage value is smaller than the flame detection reference voltage value or not when the first deviation value is larger than the deviation threshold value; the control module is further configured to increase the voltage conversion signal to increase the first direct current voltage signal when the actual flame detection voltage value is smaller than the reference flame detection voltage value;
and the voltage conversion module is connected with the control module and the ion flame signal detection circuit and used for receiving the voltage conversion signal and the second direct-current voltage signal, converting the second direct-current voltage signal according to the voltage conversion signal and outputting the first direct-current voltage signal to the ion flame signal detection circuit so that the ion flame signal detection circuit provides working voltage for the flame probe.
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| CN116068257A (en) * | 2023-04-06 | 2023-05-05 | 广东美智智能科技有限公司 | Flame ion current detection circuit and gas appliance |
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