DEVICE FOR MEASURING AND MONITORING RELAY AND ELECTRIC INTERLOCKING UNIT PARAMETERS Russian patent published in 2011 - IPC G05B23/02 

FIELD: physics.

SUBSTANCE: proposed engineering solution which employs feedback enables to correct measurements during each measurement without recourse to calibrating all channels. A stable feedback channel based on elements with highly stable parameters is sufficient. The technical result is achieved owing to that the device has a feedback channel which is included in the circuit between computers through an interface which is connected to the digital-to-analogue converter of the feedback, at the output of which there is an amplifier which is connected to a multichannel switch.

EFFECT: high accuracy of measurements, reduced probability of type I or type II errors or reduced defects during monitoring, minimisation of false and undetected failures, simple procedure of calibrating a multichannel apparatus when each channel has its own characteristics determined by external and internal factors which carry significant errors of step-like nature.

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