Direct-current voltage flame ion detection method and circuit

The invention discloses a direct-current voltage flame ion detection method and circuit. The method comprises the specific steps: S1, switching on a positive direct current power supply circuit, controlling the generation of positive direct current voltage V+, collecting the partial voltage values o...

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Bibliographic Details
Main Authors LIU MINGXIONG, PAN YEJIANG
Format Patent
LanguageChinese
English
Published 28.09.2021
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:The invention discloses a direct-current voltage flame ion detection method and circuit. The method comprises the specific steps: S1, switching on a positive direct current power supply circuit, controlling the generation of positive direct current voltage V+, collecting the partial voltage values of a sampling resistor R1 and a flame equivalent resistor R, and calculating a forward flame ion current I+; S2, conducting a negative direct-current power supply circuit, controlling generation of negative direct-current voltage V-, collecting partial voltage values of a sampling resistor R2 and a flame equivalent resistor R, and calculating negative flame ion current I-; s3, judging whether electric leakage and flame are generated or not according to a difference value between the positive flame ion current I+ and the negative flame ion current I-; and S4, carrying out ignition control and flameout protection according to the flame state in the step S3. According to the invention, the direct-current voltage is ado
Bibliography:Application Number: CN202110725713