Pseudo-random Composite Frequency Signal Source Drive Rodent Control System Applied Research

In the field of engineering research and practice, random signals has been more widely used. Pseudo-random composite signal containing multiple frequency signals, both with some random waveform characteristics, but also for necessary, it can be generated randomly, and its bandwidth can control, in which most of the signal power concentrated in a specific law on the distribution of the number of signal frequency.Application of the pseudo-random signal extended to the field of pest control, is of great significance. Through investigation of electromagnetic fields on rodent reproductive system and nervous system effects, we get out some special electromagnetic fields'frequency and filed strength. In this paper, based on these pseudo-random frequency signal by the 2n pattern of broad-spectrum synthetic composite frequency signals, electromagnetic radiation through the device of such pseudo-random frequency pulse current broad-spectrum composite signal radiation out, activity on rodents which in the range of electromagnetic radiation device, influence and even undermine their reproductive system and nervous system, so as to achieve drive, anti-rat class purposes.Signal source is designed with the software approach, avoiding fixed by the hardware design of multi-frequency signal synthesis defect, not true random. In addition, the signals generated by microcontroller, power can not meet the requirements of a particular field, so the hardware circuit design, the need to convert the signal inverter to meet the system requirements of high-power pseudo-random signal.The inverter signal must pass electromagnetic radiation in the design of radiation device within the area and asked to randomly change the purpose. Design uses a Double Butterfly type of ground as a dipole radiator, radiating antenna, a closed loop formed by the earth conductor, half the floor space to a certain height and a certain depth underground half-space electromagnetic field generated to meet the system requirements. Through the software and hardware design, system simulation, assembly equipment in the field after the experiment, tested in the radiator to generate the signal frequency and field strength are in line with requirements, design to complete a set of pseudo-random rotating electromagnetic field rodent control drive system.