Based on the theory of the continuous wave(CW) Doppler fuse with selection character of rising amplitude rate,the jamming waveform of this kind of fuse is studied with theoretical analysis and simulation.

The anti-jamming design concerning hardware of chip microprocessors control system;

Anti-jamming designing is also used to reduce interference produced by switching system.

Aiming at the possible problems occurring in the control period, this article also introduces the method to examine and indicate the fault state with sound and light and to adopt the anti-jamming design to ensure the stable performance of the system.

Because the crawl robot is in a bad environment,the ultrasonic echo is fully covered with noise,the traditionary collection system for ultrasonic cannot detect the real echo,and several layers of anti-jamming designing is inducted into the system.

This paper discusses in detail,from the selection of single chip computer to application system test,the problems in single chip computer system anti-interference design,and presents with the help of diagraphs some design methods,which are summarized by the author in his teaching,and easy to learn.

This paper introduces the interference of industrial field,the principles of anti-interference and the important position of anti-interference design in the practical construction design,and expounds the anti-interference methods with the hardware and software of PLC control system.

Microcontroller s anti-interference design method is introduced,which uses programmable interval timer 8254 as the Watchdog circuit,and uses write-protected methods to save the system s important information in 8155 RAM for system reboot.