The device of ultrasound driving bird

Birds play an important role in keeping the ecological balance of the human environment. In recent years, the number of birds rises up so quickly because of various protecting measures and regulations and the improvement of suitable survival environment for breeding birds. However, a member of birds do harm seriously to agriculture, aviation and power. How not to hurt the birds under the premise of controlling agricultural production, aviation, electric power industries has been attention in the production and scientific research departments. In this paper, the device of ultrasound drive bird was designed based on hearing characteristics. Appearance of this device declares of a new approach for driving the bird, and the ultrasound has gone influence on birds but not human being. The results of experiments proved that the birds will have loss of appetite, anorexia, convulsions and other symptoms in the circumstance of the powerful ultrasound, and it is not harmful to electronic equipment, apparatus and human being. The bird can not adapt to the frequency of random noise. Its advantages are large energy, spreading along a straight line, low power consumption and all day working.