DIGITAL THERMOMETER Russian patent published in 2019 - IPC G01K7/32 G01K3/02 

FIELD: measuring equipment.

SUBSTANCE: invention relates to thermometry and is intended for operation with thermal transducers with pulse output signal. Digital thermometer comprises thermal transducer with pulse output, square-wave generator, code-to-frequency converter, reverse count-down counter n, parallel register, first read-only memory (ROM1), second read-only memory (ROM2), logic elements (LE) AND and NOT. Output of the thermal converter is connected to the NOT LE, summing input of the reverse counter and inverting dynamic sync input of the register, the outputs of which are connected to the corresponding address inputs of ROM1 and ROM2. Outputs of ROM2 are connected to code inputs of code converter to frequency, input ƒ of which is connected to the rectangular pulses generator output. Outputs of code-to-frequency converter and NOT LE are connected to AND LE inputs, output of which is connected to subtracting input of reversible counter connected by outputs to inputs D of parallel register. Input of the digital thermometer is a thermal converter, and the output is the code outputs of the ROM with a capacity of m.

EFFECT: high accuracy of measuring temperature.

1 cl, 4 dwg