Non-magnetic position detection sensor

Abstract

The invention relates to the technical field of magnetic switches, in particular to a non-magnetic position detection sensor. The non-magnetic position detection sensor comprises a hollow plastic box, wherein an operating sheet is transversely arranged in an inner cavity of the plastic box; a silver connection joint is arranged on the operating sheet, and a conductive sheet which is in on-off fit with the silver connection joint is arranged below the silver connection joint; a magnetizer is arranged in the plastic box, and is connected with the other end of the operating sheet to realize integrated linkage setting; a buffering body matched with the magnetizer is arranged in the plastic box below the magnetizer. The non-magnetic position detection sensor is reasonable in structure; external magnetism drives the operating sheet to be matched with the conductive sheet to realize on and off change; by means of shock absorption and reset driving of the buffering body, metal fatigue and impact of the operating sheet can be avoided, so that the working stability of the sensor is improved, and the service life is prolonged; the operating sheet can bear magnetic induction, operation driving and electric connection action; a magnetism fixing frame can realize a magnetism aggregation effect through a magnetic shielding material, so that the sensitivity and the accuracy of position detection are improved; the non-magnetic position detection sensor is simple in whole structure, convenient to process and assemble and high in control precision, and the whole cost of the sensor is reduced.

Description

technical field [0001] The invention relates to the technical field of magnetic switches, in particular to a non-magnetic position detection sensor. Background technique [0002] The magnetic proximity switch is a kind of proximity switch, which can sense the change of the positional relationship through the magnetic element, and convert the non-electric or electromagnetic quantity into the required electrical signal, so as to achieve the purpose of control or measurement. For robot application technology, automatic navigation and position detection are the core technologies to realize intelligent control, and the position detection and execution control scheme provided by the proximity switch has advantages that other controllers do not have. Magnetic proximity switches are used in military fields such as magnetic fuze warheads and spacecraft fluxgates, high-end equipment manufacturing industries such as high-speed trains, automatic elevators, and magnetothermal power gener...

AI Technical Summary

Problems solved by technology

[0003] Existing magnetic proximity switches realize position sensing through magnetic field detection, most of which are divided into Hall type, magnetic group type, reed switch type, etc., and the core magnetic sensitive elements are mostly imported from abroad, the production cycle is long and the core Technology is controlled by others, leading to high costs

Most of the existing magnetic sensors rely on the interaction force between internal magnetism and external magnetism to realize the disconnection and connection of the head. The internal magnetism is easy to magnetize the conductive metal structure and affect the accuracy and sensitivity of the action; and the internal magnetism adopts ferrite hard magnetism It is easy to drop powder, and the use of NdFeB hard magnets requires electroplating to coat the magnetic powder. The electroplating layer on the contact part is easy to fall off under long-term repeated actions, resulting in loss of internal magnetic function or magnetic powder falling off and affecting electrical contact.

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