TEMPERATURE MEASURING DEVICE WHICH IS STANDARD RESISTOR EQUIVALENT AND METHOD REALISED IN SAID DEVICE Russian patent published in 2009 - IPC G01K7/16 

FIELD: physics.

SUBSTANCE: temperature measuring device which is an equivalent of a standard resistor has a circuit of series-connected resistors with known and different resistance-temperature relationships, placed locally on a common heat-conducting substrate, where one outer lead of the circuit is connected to the input of a current generator, the other outer lead is earthed, and the inside leads of the circuit are connected in parallel to inputs of a grouped analogue-to-digital converter, the output of which is connected to the input of a microprocessor, the output of which is the output of the device. The method of designing the said device involves using a circuit of n series connected resistors with known and different resistance-temperature relationships, which allows for determining their common measured temperature θ(t) with arbitrary operating current with respect to potential drops U_i/U_j across them and further - their current resistances from known temperature relationships φ_i(θ) and total resistance, equal to resistance of an equivalent standard resistor.

EFFECT: increased accuracy of measuring temperature.

2 cl, 1 dwg