Sensor of trace metal vortex type proximity switch

Abstract

The invention discloses a sensor of a trace metal vortex type proximity switch. The sensor comprises a proximity sensitive element, a sensitivity circuit, a high-frequency oscillating circuit, a switch output circuit and an indication output circuit, wherein the sensitivity circuit is connected with the proximity sensitive element and used for controlling the sensitivity of the proximity sensitive element, the high-frequency oscillating circuit is connected with the proximity sensitive element and used for generating a high-frequency magnetic field, the switch output circuit is connected with the high-frequency oscillating circuit and used for conducting switch output, and the indication output circuit is connected with the switch output circuit and used for conducting working indication. The non-contact sensor is used for detecting trace metal contained in novel aluminized paper by penetrating through outer-layer box bark paper, the intensity of the magnetic field of a proximity sensitive element transformer can be changed by adjusting a potentiometer sensitivity circuit RP2 so as to enable the proximity sensitive element transformer to have farther detection distance and reaction sensitivity, and therefore the purpose of controlling switch connection or disconnection when long distance and trace metal material approach is achieved.

Description

technical field [0001] The invention relates to the technical field of switching elements, and more specifically relates to a micro-metal eddy current proximity switch sensor. Background technique [0002] Since tobacco entered the "era of brand competition", gold printing, hot stamping, anodized aluminum hot stamping, laser holographic packaging materials (laser holographic aluminum plating, silver plating, gold-plated film, vacuum aluminum-coated paper and vacuum sprayed aluminum paper), laser hot stamping film And other technologies have been successively adopted by various cigarette factories, so that the carton of cigarettes contains trace metal components; in addition, under the call of the national concept of environmental protection, energy saving, and consumption reduction, in order to reduce production costs and make raw materials more in line with environmental protection requirements, many The cigarette factory uses a new type of aluminum paper as the inner shirt...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a micro-metal eddy current proximity switch sensor to overcome the fact that the existing inductive electronic switches in the market cannot detect cigarettes normally due to the extremely low metal content of the new aluminum paper selected in the prior art. The aluminum foil paper in the small package in the box (contains only trace metal components), and thus cannot control the on or off of the switch

Images