Power grid frequency detection circuit and method, storage medium and processor
The present invention discloses a power grid frequency detection circuit and method, a storage medium and a processor, wherein the circuit comprises an active filtering circuit which is used for filtering the interference noise of a voltage sampling signal and of which the input end is connected wit...
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Main Authors | , |
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Format | Patent |
Language | Chinese English |
Published |
16.01.2018
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Subjects | |
Online Access | Get full text |
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Summary: | The present invention discloses a power grid frequency detection circuit and method, a storage medium and a processor, wherein the circuit comprises an active filtering circuit which is used for filtering the interference noise of a voltage sampling signal and of which the input end is connected with the output end of a power grid and is used for receiving the voltage sampling signal of the powergrid; a comparator circuit which is used for comparing the voltage sampling signal outputted by the active filtering circuit with a reference voltage and of which the input end is connected with the output end of the active filtering circuit; a controller connected with the output end of the comparator circuit and used for calculating the frequency of the power grid according to a signal outputtedby the comparator circuit. According to the present invention, the technical problem that the power grid frequency detection precision is lower, is solved.
本发明公开了种电网频率检测电路、方法、存储介质和处理器。其中,该电路包括:有源滤波电路,输入端与电网的输出端相连接,有源滤波电路的输入端用 |
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Bibliography: | Application Number: CN201710793251 |