Magnetic coding method of weft accumulator

The invention discloses a magnetic coding method of a weft accumulator, which comprises a shell, a rotating shaft is arranged in the shell, one end of the rotating shaft is sleeved with annular magnetic steel, and the magnetic steel and the rotating shaft are fixed in the circumferential direction; a circuit board is further included, a shaft hole is formed in the circuit board, a plurality of Hall sensors are arranged on the circuit board around the shaft hole, the rotating shaft penetrates through the shaft hole in the circuit board, and the Hall sensors surround the magnetic steel on the rotating shaft. The magnetic steel generates surrounding magnetic field intensity change along with rotation of the rotating shaft, the Hall sensor annularly receives the magnetic field intensity of the magnetic steel and generates different electric signals, the position of the magnetic steel is obtained through calculation processing, and rotating shaft winding counting is achieved. The weft accumulator replaces a tradit