Method of reference measurement of temperatures and temperature difference, asymmetric temperature sensor and asymmetric reference element for making the same

摘要

in mericu00edho (m1) with merenou temperature t1 is simultaneously placed first pairs (d1) su00e9riove united temperature rezistorovu00fdch sensor (1, 2) with the same temperature soucinitelem resistance tcr.but different values of resistance rvt1 asymmetrically and rmt1, vztaznu00e1 temperature tv is chosen approximately as oceku00e1vanu00e1teplota that mericu00edho (m1).vzdu00e1lene from mericu00edho (m1) is placed a pair of (d3) su00e9riove united teplotne independent rezistoru (5, 6).the resistance value rd and rm are the identical shodnotami resistance rvt and rmt first pairs (d1) of the rezistorovu00fdch sensor (1, 2) in vztaznu00e9 temperature tvthe first one (d1) of the rezistorovu00fdch sensor (1, 2) antiparalelne connects to a pair of (d3) teplotne independent rezistoru (5, 6).on the vnejsu00ed vodice (vin +) and (vin -) of the two pairs (d1) and (d3) pripoju00ed supply tension uin, between vnejsu00edmvodicem (vin -) and all the temperature rezistorovu00fdm senzorum (1, 2) and teplotne independent rezistorum (56) spolecnu00fdm middle vodicem (we were doing segments together to teplotne) of independent rezistoru (6) with the value of the resistance rm is zmeru00ed voltmetrem (in) napetovu00fd signal uout,as the figure below should establish the relative odds of signal uout / uin, nehoz according to the relation:.delta.t = (1 - 2 x uout / uin) / (tcr x (uout / uin - 1 / (k + 1))) = t1 - tv is obtained.delta. deviationt temperature mericu00edho (m1) from the first defined vztaznu00e9 temperature tv, real temperature t1 mericu00edho (m1) the figure below provides, to vztaznu00e9 temperature tv pripocu00edtu00e1 deviation.delta.t - when the tcr is the first pair (d1) of the rezistorovu00fdch sensor (1) and (2) in a temperature coefficient resistance - kje for both pairs (d1) and (d3) identical coefficient of asymmetry is defined i