Technology of Sensor Devices with Metrological Self-Check

Abstract

The paper deals with the problem of providing the reliability of measurement information. |In the paper, a biomimetic approach to the technology of sensor devices is discussed. Efficiency of metrological self-check methods in comparison with conventional methods of metrological maintenance is shown. The advantage of the metrological selfcheck based on the evaluation of the most dangerous error component, is demonstrated. New effective methods of the metrological self-check of pressure and temperature sensors are proposed.

What makes sensor devices and microsystems 'intelligent' or 'smart'?

“…The metrological self-check can be realized in two forms: a direct or diagnostic self-check Taymanov et al ., 2011). If the metrological self-check is accompanied by evaluation of uncertainty or error, it is usually called 'self-validation' .…”

“…In the intelligent sensor device applied as a measuring instrument (Taymanov et al ., 2011), it is possible to do the following:…”

Sensor Devices with High Metrological Reliability

“…When the processes of the first group dominate, a critical error component is the deviation of the platinum wire resistance, which is caused by variation of the properties of the surface layer. In (Taymanov et al, 2011) it is proposed to use the structural redundancy for realizing the function of metrological diagnostic self-check, i.e., to make an intelligent sensor device on the basis of two or a number of sensors differently sensitive to factors influencing on the growth of the critical error component. To realize the function of metrological diagnostic self-check in the process of operation, the DP β, that depends on the values of signals coming from various sensors, is calculated, for example,…”

Fiber-optical method of pyrometric measurement of melts temperature

“…The converters consist of two parts: a body (rod) and a replaceable thermocouple measuring package of one-time use. The advantages of the pyrometric method of temperature measurement include non-contactness and high speed of measurement, and the disadvantages are a high error associated primarily with the uncertainties of the blackness coefficients [6,7]. A large number of publications [2,13] devoted to solutions to reducing the uncertainties associated with the uncertainties in the blackness coefficients in pyrometric measurements.…”