| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for beating back injurious birds by using a solar battery, wherein the birds are continuously beaten. <P>SOLUTION: A system comprising an inverter 52 inverting DC power to AC power and a noise radiator 3 to be set in a habitat of the birds is provided, wherein the DC power is supplied from the solar battery. The noise radiator 3 radiates in the atmosphere a switching noise released from the inverter 52 so as to beat back the injurious birds. The inverter 52 may be made generate switching noise at night by converting AC power to DC power. Or the inverter 52 may have an inverter of an electrically smaller capacity than that of the inverter 52 and for beating back the injurious birds so that the inverter releases switching noise by switching of random frequency, or may have an inverter having a capacity of the same as or smaller than that of the inverter 52 and for beating back the injurious birds, and a noise switching switch switching strength of the switching noise released from the inverter. <P>COPYRIGHT: (C)2007,JPO&INPIT |
