DEVICE FOR LOCAL TEMPERATURE MEASUREMENT Russian patent published in 2007 - IPC G01K7/18 A61B5/01 

FIELD: measuring equipment engineering, possible use in medicinal diagnostics for non-invasive measurement of temperature of body parts and internal organs of bio object during contact with surface.

SUBSTANCE: invention includes temperature sensor, made in form of resistive sensor, connected in accordance to three-wire circuit, controlled current generator, scaling bridge balance amplifier, adder, analog-digital converter, first and third resistors, liquid-crystalline indicator and power monitor connected to it and power buses. First clamp of temperature sensor is connected to output of controlled current generator, connected to negative power bus, first input of adder and first signal input of analog-digital converter, second output of temperature sensor is connected to first input of scaling amplifier of bridge balance, while third clamp of temperature sensor - to first resistor, second controlling output of scaling bridge balance amplifier is connected to input of controlled current generator, and its third output - to point of connection of second and third resistors, second output of second resistor is connected to second output of first resistor, position power bus and second input of adder, while second output of third resistor is grounded, while output of adder is connected to first input of support voltage of analog-digital converter, group of outputs of which is connected to group of inputs of liquid-crystalline indicator.

EFFECT: increased precision when measuring local temperature.

2 cl, 1 dwg