| With the wide application of electromagnetic technology, more and more different frequency bands of electromagnetic radiation produced in the human life and form of electromagnetic pollution. Currently, many organizations have carried out the research topics of electromagnetic effects on humans and other biology. This paper studies the effect of ELF electromagnetic fields on rats central nervous system and reproductive system. Based on the electromagnetic field frequency and the magnetic field strength which can open the biological effects of rats, that we have defined, we developed a rodent control device drive.The system consists of electromagnetic field excitation source and the electromagnetic radiation very. The electromagnetic field excitation source used single chip unites DS1302 clock chip to generates the pseudo-random numbers. The control signal is composited from multiple frequencies. Using this control signal, we can trigger the SCR inverter output pseudo-random multi-frequency inverter signal. Finally, the signal drived double butterfly grounded dipole antennas for electromagnetic radiation. As the selection of double butterfly grounded dipole antenna is pseudo-random and the loop will be changed time to time, the electromagnetic radiation can cover the whole area of radiation very layout in the case of radiation long enough.The Magnetic field effects on biological mechanisms is extremely complex. The three basic parameters including electromagnetic radiation of frequency, intensity and irradiation time all have the possibility to lead to window effects while the magnetic radiation operations on rodents. Therefore, the electromagnetic radiation system used two kinds of program. One of the programs cost lower, but the electromagnetic coverage is smaller and the magnetic field strength is lower. The other programs cost higher, but the electromagnetic coverage is bigger and the magnetic field strength is higher. Now we have finished the equipment and the system has been made to achieved some effect through preliminary experiments. |