Capacitive sensing circuits and some applications

A characteristic feature of the rapid development of information and control systems in the world is the increasing spread of sensors of various physical quantities in all spheres of life. Sensors are increasingly used in industrial control, industrial process automation, automotive, aerospace, rocket – space technology, medicine and safety control systems. In this study, a mathematical model was developed for the design of an electronic circuit with a capacitive sensor and an analysis was given of the parameters that affect the sensitivity of the circuit depending on the value of the sensitive capacitor. Overall, all the components of the capacitive measuring circuit are analysed, and a new remotely controlled capacitive measuring circuit has been developed that gives the solar panel and battery design that safely matches the power consumption of the circuit. With the developed mobile application, the status information detected by the detection sensor is wirelessly transmitted to a mobile device such as a mobile phone or tablet, and the practical application of this new system has been successfully implemented.