METHOD AND DEVICE FOR MEASUREMENT OF TEMPERATURE

摘要

The invention relates to a method for measurement of temperature with detector (1) which is of the inductive type and comprises a coil (5) and a core (4) movable within the coil, the position of said core in relation to the coil (5) being dependent on the position of said element (9), wherein the method comprises: connecting a regularly alternating voltage to said coil (5), and measuring the current (i) flowing through coil. The method according to the invention is characterised by comprising: measuring a first period of time (t¿1<) needed for said current (i) to change from a first predetermined level (ii) to a second predetermined level (I2); measuring a second period of time (t¿2?) passing from when said voltage changes polarity until said current (i) reaches said second period of time (t¿2?) passing from when said voltage changes polarity until said current (i) reaches said second predetermined level (i¿2?); and deriving a measurement of the temperature (T) in connection with the detector (1) on the basis of the measurements of said first period of time (t¿1?) and said second period of time (t¿2?). Through the invention, an improved measurement of temperature is provided, primarily for automotive vehicle gearboxes.