On-site checking device for wind direction sensor

The utility model discloses an on-site checking device for a wind direction sensor, which comprises a single chip microcomputer module, and an interface module, a display module, a sound module and a power supply module which are connected with the single chip microcomputer module, the interface module is connected with the Gray code disc type wind direction sensor; the single-chip microcomputer module is connected with and recognizes an output signal of the wind direction sensor through the interface module, reads a Gray code and a wind direction value to carry out fault detection, and then generates a detection result signal and outputs the detection result signal. The display module comprises an LED indicating unit and a wind direction value display unit. The LED indication unit is used for displaying a Gray code level state and a detection result in real time; the wind direction value display unit is used for displaying wind direction value data and detection results; the sound module is used for outputti