ULTRASONIC MOSQUITO REPELLENT BY PERIPHERAL INTERFACE CONTROLLER

Mosquitoes are small insets and they can response some ultrasonic frequency ranges. They carry some dangerous diseases and human are infected these diseases by mosquitoes’ bite. The best mosquito repellent system is the ultrasonic mosquito repellent system that generates the fake male mosquitoes’ frequency range. The ultrasonic mosquito repellent system mainly comprises the PIC16F84A microcontroller, 4MHz crystal oscillator and ultrasonic transducer. The controlled program is written in pic BasicPro programming language and the program source code is converted to the machine code by the complier software. This machine code is downloaded to the PIC’s memory by PICKit 3 programmer. The system can produce the ultrasound frequency ranges 37-40 kHz and the cover area of the system is 8 square meter.