A shield for inertial navigation equipment

Through the seamless enclosed structure of the aluminum alloy base and cover, and the high magnetic permeability material layer, the problem of low measurement accuracy of inertial navigation equipment in complex electromagnetic environments is solved, and effective shielding against low-frequency and high-frequency electromagnetic interference is achieved, making it suitable for fields such as drones and autonomous driving.

CN224460408UActive Publication Date: 2026-07-03CHONGQING TREASURE MAP TECH DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING TREASURE MAP TECH DEV CO LTD
Filing Date
2025-08-14
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Inertial navigation equipment has low measurement accuracy in complex electromagnetic environments and is severely affected by electromagnetic interference. Existing shielding covers cannot effectively shield low-frequency magnetic field interference and have high production costs.

Method used

The base and cover are made of aluminum alloy and designed in a polygonal or circular shape to form a seamless closed structure. Combined with a high magnetic permeability material layer, the base is soldered to the PCB board through connecting pins, and the cover fits tightly with the base to form all-round electromagnetic shielding, which is compatible with the component layout of inertial navigation equipment.

Benefits of technology

It effectively shields low-frequency and high-frequency electromagnetic interference, improves the measurement accuracy and stability of inertial navigation equipment, reduces production costs, and is suitable for scenarios such as drones and autonomous driving.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224460408U_ABST
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Abstract

This utility model relates to the technical field of laser measurement, specifically to a shielding cover for inertial navigation equipment, comprising a base and a cover. The base has a polygonal or circular outer contour and a first through hole running vertically through the center. A support portion extends radially from the upper end of the first through hole, forming a second through hole running vertically through the upper part of the base. Multiple downwardly extending connecting pins are provided on the lower end face of the support portion for soldering to a PCB board. The lower end face of the base contacts the PCB board. The cover is detachably connected to the upper part of the base. A clearance groove is formed on the lower end face of the cover, the size of which is adapted to the outer contour of the base for mating with the upper part of the base. The groove wall is in close contact with the outer surface of the base, and the groove bottom contacts the upper end face of the support portion, forming a shielding space for accommodating the inertial navigation equipment array. The problem of low measurement accuracy caused by electromagnetic interference in inertial navigation equipment is addressed.
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