Single-chip solution for electronics unit of a smart pressure sensor. Issue 5 (6th July 2020)

• Record Type: Journal Article
• Authors: Nadezhdin, Igor S.; Goryunov, Aleksey G.
• Is Part Of: Sensor review. Volume 40:Issue 5(2020)
• Page Start: 529
• Page End: 534
• Publication Date: 2020-07-06
• Subjects: Mathematical model -- Capacitive sensitive element -- Differential pressure -- Programmable system-on-chip -- Smart sensor; Sensor systems -- Periodicals; Detectors -- Industrial applications -- Periodicals; Engineering instruments -- Periodicals; 681.2
• DOI: 10.1108/SR-10-2019-0253
• Languages: English
• ISSNs: 0260-2288

Abstract

Abstract : Purpose: Differential pressure is an important technological parameter, one urgent task of which is control and measurement. To date, the lion's share of research in this area has focused on the development and improvement of differential pressure sensors. The purpose of this paper is to develop a smart differential pressure sensor with improved operational and metrological characteristics. Design/methodology/approach: The operating principle of the developed pressure sensor is based on the capacitive measurement principle. The measuring unit of the developed pressure sensor is based on a differential capacitive sensitive element. Programmable system-on-chip (PSoC) technology has been used to develop the electronics unit. Findings: The use of a differential capacitive sensitive element allows the unit to compensate for the influence of interference (for example, temperature) on the measurement result. With the use of PSoC technology, it is also possible to increase the noise immunity of the developed smart differential pressure sensor and provide an unparalleled combination of flexibility and integration of analog and digital functionality. Originality/value: The use of PSoC technology in the developed smart differential pressure sensor has many indisputable advantages, as the size of the entire circuit can be minimized. As a result, the circuit has improved noise immunity. Accordingly, the procedure for debugging and changing the software of the electronics unit is simplified. These features make development and manufacturing cost effective.