Sensors and measurements are the most basic means of collecting physical data, and the measurement results should be trusted and utilized. The management system of the future measurement network based on the next-generation sensor has limitations in responding to the current quality assurance system due to changes in the use of sensors, an increase in observation points, and changes in the method of using measurement results. Due to this reason, the measurement strategy direction should be investigated to ensure the reliability of measurement data. The basic approach can be summarized as follows: change in the viewpoint from hardware devices to measured data themselves, openness to novel type of devices, and removal of uncertainties by the process of sharing the basis of reliability through clear and efficient information exchange. In principle, the direction should be targeted for novel sensors to remove the barriers to enter the industry and market, based on the continuity with the current measurement standard system and traceability to the International System of Units.

Measurement standard for AC RMS voltage has been realized, by using thermal converters as AC-DC transfer standards in every country. AC-DC transfer standards provide a link for AC RMS voltage to DC voltage. Since thermal converters are physical artefacts, they have characteristic error defined by AC-DC difference. By adopting MEMS technology, a high performance thermal converter, called planar multi-junction thermal converter (PMJTC), with low AC-DC transfer difference and high output voltage has been successfully developed, and widely used as primary AC-DC transfer standard in many countries. In the Republic of Korea, AC-DC transfer standards 10 Hz to 1 MHz in frequency for 2 mV_rms to 1000 V_rms have been established by using PMJTC.