A path tracking sensor and tracking method based on electromagnetic induction

Abstract

The invention discloses a path tracking sensor based on electromagnetic induction and a tracking method. The path tracking sensor comprises a power supply unit, a signal detection unit, a frequency-selecting filtering unit, a signal amplification unit, a signal outputting unit and a connecting and fixing unit, wherein the path tracking sensor is arranged on a motion carrier through the connectingand fixing unit; the signal detection unit acquires the signals of a surrounding magnetic field; the frequency-selecting filtering unit extracts an effective signal; the signal amplification unit amplifies the effective signal and transmits the effective signal to the AD channel of a motion carrier controller through the signal outputting unit; the offset value of the motion carrier relative to the central guiding line of a path is calculated, and the motion carrier is corrected to return to the path; thus, automatic tracking is realized. The path tracking sensor provided by the invention solves the problems of large volume mass, unstable output signals and poor maintainability of a conventional electromagnetic sensor; meanwhile, the tracking method matching with the path tracking sensor solves the problems of high dependence on a signal source terminal device and a non-monotonic trajectory curve of a traditional difference method, and improves the stability of automatic tracking.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a path tracking sensor and a tracking method based on electromagnetic induction. Background technique [0002] The existing automatic tracking system has a variety of principles, mainly based on camera and photoelectric CCD image processing. They have poor adaptability to ambient light, and high-speed cameras are expensive and difficult to maintain. The algorithm depth of machine learning and pattern recognition is high, the amount of data is large, the sample normative dependence is large, and the processing speed is slow. [0003] The coil sensing method based on electromagnetic induction has obvious advantages: good environmental adaptability, low cost, high algorithm robustness, good portability, and fast information processing speed. However, the existing electromagnetic sensors still have disadvantages such as large size, easy damage by collision, uns...

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Problems solved by technology

[0004] In order to solve the technical problems raised by the above-mentioned background technology, the present invention aims to provide a path tracking sensor and tracking method based on electromagnetic induction, which solves the problems of large volume and mass, unstable output signal and poor maintainability of existing electromagnetic sensors. At the same time, the matching tracking method solves the problem of high dependence on the signal source device and the non-monotonic problem of the track curve existing in the traditional difference method, and further improves the stability of automatic tracking

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