Signal acquisition method of rotation angle of rotating member with V-shaped notch

A signal acquisition method of the rotation angle of a rotating member with a V-shaped notch includes: the V-shaped notch area where the V-shaped notch area of the rotating member (5) is arranged is defined as a blind area (3), a magnetic grid scale (2) is stuck on the periphery of the rotating member with the V-shaped notch and is provided with scale marks, a main positioner (4) and an auxiliary positioner (8) are symmetrically arranged on both sides of the magnetic grid scale, the main positioner is used for fixing a main magnetic grid sensor (1), the auxiliary positioner is used for fixing an auxiliary magnetic grid sensor (7), and the main magnetic grid senor and the auxiliary magnetic grid sensor are configured in a 180-degree symmetry mode. The complementary magnetic grid sensors can subject the magnetic grid scale on the rotating member with the V-shaped notch to signal acquisition, so that the monitoring of the rotation angle of the rotating member with the V-shaped notch can be achieved, and the sign