MULTICHANNEL TEMPERATURE MEASURING DEVICE Russian patent published in 2023 - IPC G01K7/16 

FIELD: measuring equipment.

SUBSTANCE: used to measure the temperature of many objects or in many areas of one object. A device for measuring temperature is proposed, including n resistance thermometers, which is additionally equipped with 2n connecting wires, a measurement data collection board consisting of a connector, four analog multiplexers with information and control inputs, a measuring current generator, a differential amplifier, an analog-to-digital converter, a block with functions for filtering control, processing measurement data and displaying them. In this case, each resistance thermometer is connected to two contacts of the board connector with connecting wires, and the information inputs of the first and third multiplexers are connected to the first connecting wires of the sensors. The information inputs of the second and fourth multiplexers are connected to the second connecting wires of the sensors, and the outputs of the measuring current generator are connected to the outputs of the first and second multiplexers. The inputs of the differential amplifier are connected to the outputs of the third and fourth multiplexers, the input of the analog-to-digital converter is connected to the output of the differential amplifier. The input of the block for filtering, control, processing of measurement data and their display is connected to the output of the analog-to-digital converter, and the outputs of this block are connected to the control inputs of four multiplexers.

EFFECT: simplification and increased reliability of the device, as well as increased reliability and accuracy of temperature measurements in many areas of the object or the temperature of the objects themselves.

1 cl, 1 dwg