Frequency acquisition and uploading circuit

The utility model discloses a frequency acquisition and uploading circuit, which comprises a voltage shaping circuit and a DSP (Digital Signal Processor) controller, the voltage shaping circuit is used for accessing a voltage and shaping a voltage waveform into a low-pulse square wave signal, the output end of the voltage shaping circuit is connected with the DSP controller, the output end of the DSP controller is connected with an upper computer through a communication interface, and the upper computer is used for collecting and storing the frequency of the input voltage; according to the utility model, the DSP controller is matched with the optocoupler converter to read the frequency acquisition of the number of the rising and falling edges of the AC waveform, so that the blank of frequency acquisition and uploading of aviation power supply equipment is filled, and the frequency acquisition and uploading device can be popularized to other fields requiring acquisition of the input AC voltage frequency. 本实用新型