AUTOMATIC CALIBRATOR OF MULTICHANNEL MEASURING SYSTEM Russian patent published in 2019 - IPC G01R35/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment and is intended for automatic metrological verification and certification of channels for measuring signals of tensoresistor and thermoresistor sensors of high-speed measuring systems, in which measuring and control devices are connected by corresponding lines with switches of sensors. Disclosed is an automatic calibrator of a multichannel measurement system, comprising a calibrator control device, a signal former with outputs for each signal step and a calibrator switch, similar to the verified system sensors switch, wherein the output of each step of the signal former is connected to the corresponding input of the calibrator switch, measuring output of which is connected to each measuring input of switch of sensors of verified system, characterized by that control device of calibrator comprises binary step counter, which outputs are connected to the control inputs of the point number in the calibrator switch and the NAND gate of this control device, the counter input of the binary step counter is connected to the "zero" in the initial state by the trigger output, and the "zero setting" input of this counter is connected to the output of the signal former "zero setting", the first input of the first OR logic element and the first input of the second OR logic element, the first flip flop input is connected to the output of the first OR logic element, trigger second input is connected to single-pole switch and second input of second OR logic element, output of which is connected to zero setting input of binary counter of number of measurement cycles, counting input of which is connected to output of AND logic element, and outputs are connected to binary decoder inputs number of measurement cycles, first output of which is connected to second input of first logical element OR, and output with number equal to number of measurement cycles is connected to input of single-pole switch, first input of logic element AND is connected to output of logical element NOR, second input of logic element AND is connected to output of logic element NAND, inputs of the logical NOR element which are inputs of the control device of the calibrator are connected to the outputs of the switch number of the control line of the verified system, the control inputs of the number of the connector and the number of the switch in the switch of the calibrator are connected to outputs of the unit for forming the number of the connector and the number of the switch of the calibrator.

EFFECT: technical result when implementing the declared solution is organization of the possibility of automatic metrological verification and certification of channels for measuring signals of strain-resistor and thermoresistor sensors of high-speed measuring systems, in which measuring and control devices are connected by corresponding lines to switches of sensors and which were not equipped with automatic calibrators for performance of certification and metrological verification; use of step signal generators made in the form of separate structural units will make it possible to use the same control unit of the calibrator for metrological checking of different systems and different measuring channels of systems corresponding to the type of signals generator.

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