In order to solve the problem of the mechanical arc sensor for seam-tracking,a new type of magnetic-control arc sensor was developed,and its mechanical structure and the correlative circuit diagram were given.

Aimed at some problems of the mechanical arc sensor for seam-tracking,the magnetic-control welding arc technology is applied to seam tracleking,a new type magnetic-control arc sensor and a system structure with two sets of crossed slides are designed.

In order to solve some problems of the sensor for seam-tracking,applied the magnetic-control welding arc technology,developed a new type magnetic-control arc sensor,it s basic principle was analyzed,and mathematic model was built,the main parameters were analyzed,that provided academic foundation for the application of the magnetic-control arc sensor.

Signal processing and communication of arc sensor based on DSP;

Design of arc sensor based on rule self-adaptive fuzzy controller;

Development of arc sensor for short circuit transition;

The sensors including integrated MEMS sensors,tire tread impedance sensors,ultrasonic sensors,electromagnetic sensors,wireless passive surface acoustic wave sensors and virtual sensor were introduced,and their present development,and their working principles,advantages and disadvantages were described in detail.

A method of electromagnetic sensor navigation of inspection robot for high-voltage transmission line is proposed.

Applications of magnetoelectric sensor on the digital photogram-metric worksStations;