| 摘要 |
The subject of the invention is magnetic sensor for displacement measurements, esp. in the field of metrology of non-electric signals. Measuring such physical quantities as force, pressure, mass acceleration, strain, vibration, etc. is particularly promising. In the invention, the magnetic sensor for displacement measurements consists of two ring magnets (1) and (2), advanageously neodymic, in parallel arrangement with like poles facing each other or two induction coils connected in opposite phase relation, advantageously within the distance equal to radius (R) of each magnet or coil. Ring magnets (1) and (2) or induction coils are permanently set inside the body (4) made of a material characterized by small thermal expansion coefficient within the range below 6 x 10-6 (m/mK), advantageously a ceramic one. In the internal space between the ring magnets(1) and (2) or induction coils, the linear Hall sensor (3) (or other sensor for magnetic flux strength measurement) is placed. |
