Electrically balanced fluxgate gradiometers
US4439732A · kind A · utility
15Cited by
5References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1981 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | May 26, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/845
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gradiometer for measuring magnetic field gradients. The gradiometer is formed by a number of magnetic field sensing devices. Each device has its own axis of sensitivity and produces a signal proportional to the magnetic field strength in the direction of its axis of sensitivity. The devices are mounted so that the different axes of sensitivity are at different angles to each other and so that at least some of the devices are displaced from each other along a common axis. The signals from the devices are combined so as to balance out unwanted components, particularly those due to the earth's magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.