Browse Definitions :
Definition

fluxgate magnetometer

A fluxgate magnetometer is a device that measures the intensity and orientation of magnetic lines of flux . Fluxgate magnetometers have been used by robotic space probes to analyze, map and monitor the magnetic fields of the earth and other planets. They are also used in geological prospecting, aerospace navigation, underwater navigation, land navigation and submarine detection.

The heart of the fluxgate magnetometer is a ferromagnetic core surrounded by two coils of wire in a configuration resembling a transformer. Alternating current ( AC ) is passed through one coil, called the primary, producing an alternating magnetic field that induces AC in the other coil, called the secondary. The intensity and phase of the AC in the secondary are constantly measured. When a change occurs in the external magnetic field, the output of the secondary coil changes. The extent and phase of this change can be analyzed to determine the intensity and orientation of the flux lines.

The techology is sometimes used in a comprehensive robot guidance system that operates on the basis of external magnetic field s. In such a system, navigation is guided by continuous analysis of the intensity and direction of the flux lines within the robot's work environment. Here's how it works: An artificial external reference field is generated by placing strong direct current ( DC ) electromagnets at various points in the robot's work environment. The robot controller stores data concerning the resulting flux field. For each point in the work environment, the magnetic field has a specific intensity and the flux lines run in a specific direction. Based on this information, the robot can locate its position and orientation at all times and navigate along programmed paths.

Fluxgate magnetometers are usually employed in conjunction with other location and navigation methods such as the Global Positioning System ( GPS ).

This was last updated in August 2007

Continue Reading About fluxgate magnetometer

SearchCompliance

SearchSecurity

  • cyber attack

    A cyber attack is any attempt to gain unauthorized access to a computer, computing system or computer network with the intent to ...

  • backdoor (computing)

    A backdoor is a means to access a computer system or encrypted data that bypasses the system's customary security mechanisms.

  • post-quantum cryptography

    Post-quantum cryptography, also called quantum encryption, is the development of cryptographic systems for classical computers ...

SearchHealthIT

SearchDisasterRecovery

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

SearchStorage

Close