A Low-Power, Wireless, Capacitive Sensing Frontend Based on a Self-Oscillating Inductive Link

Wireless sensing systems are becoming popular in a range of applications, particularly in the case of biomedical circuits and food monitoring systems. A typical wireless sensing system, however, may require considerable complexity to perform the necessary analog to digital conversion and subsequent wireless transmission. Alternatively, in the...

Sensorsysteem voor SubDowser: Een betaalbaar sensorsysteem voor het monitoren van waterkwaliteit en -kwantiteit in Afrikaanse waterputten

Deze thesis beschrijft de ontwerpkeuzes, het ontwerp en het begin van de implementatie van een sensorsysteem dat voor e12,50 aan componenten de waterdiepte, temperatuur en conductiviteit meet in waterputten. Aan de hand van de temperatuur en de conductiviteit kan de zoutconcentratie benaderd worden. Er is gekozen voor een combinatie van nieuwe...

Area-Efficient Readout IC with High Panel Noise Rejection for Capacitive Touchscreens

As capacitive sensing provides flexible and reliable touch user interfaces for a varied set of applications, it has gained popularity over other touch sensing techniques. Consequently, capacitive touchscreens when interfaced with large display panels increases the number of channels that a readout IC has to support. As existing area-intensive...

Squeeze-film damper design with air channels: Experimental verification

The experimental evaluation of damping-improved parallel-plate geometries is reported in this paper. An improved damper geometry with air channels was developed to address contradictory design constraints: large sensing parallel-plate area is desirable for a significant readout capacitance as well as reduced damping coefficient. Damping...