Blade type security monitoring device

The invention discloses a blade type security monitoring device. The device includes a pedestal; the pedestal is fixed on the cement ground; the periphery of the pedestal is provided with four supportcolumns in matrix distribution; fences are arranged between the four support columns; the top ends of the fences are provided with blades; the four support columns are provided with infrared sensors;the top end of the pedestal is provided with a lamp post; the bottom end at the internal of the lamp post is provided with a control electronic box; the control electronic box is provided with a wireless module, a storage battery, a control mainboard and a storage module; the top end of the control electronic box is provided with a motor with upward output end; the top end of the motor is provided with a screw rod; the screw rod is sleeved by a screw-nut; the two ends of the screw-nut are provided with cantilever beams penetrating the lamp post; the top ends on the sides, away from the lamp post, of the two cantilever