A novel smart resistive-capacitive angular position sensor is presented. The main advantages of this low-cost system are its simplicity, high stability and high reliability. A very hear oscillator is used in the processing circuit to convert the position quantity to a period-modulated signal which can directly be read out by a microcontroller. The system does not need an A/D converter. The nonl...

Capacitive methods for determining soil moisture are extremely practical and easily applied in the agriculturalenvironment, but influenced by temperature, salinity type of soil. In this study, aim was to verify performanceof Moisture Sensor Porous Media when subjected saline media. The sensor under evaluation wasdeveloped at Federal University Ceará, provides measurements electrical frequencies...

The Instant Instrument Anywhere (IIA) is a small device which can be attached to any metal object to create an electronic instrument. The device uses capacitive sensing to detect proximity of the player’s body to the metal object, and sound is generated through a surface transducer which can be attached to any flat surface. Because the capacitive sensor can be any shape or size, absolute capaci...

Capacitive Strain Sensors In article number 2209321, Tyler J. Cuthbert, Carlo Menon, and co-workers present a novel capacitive strain sensor that accesses sensitivity beyond the theoretical limit. The helical auxetic (HACS) employs two-component yarn structure allowing tuneable accessible ranges. HACS is found to be from an engulfment phenomenon, which predicted with geometric model analyzed by...

In this work we demonstrate the advantages of conformal mapping methods for the design of capacitive sensor setups. If the setups are modeled appropriately, the respective Laplace equations can be solved utilizing conformal mapping methods. These methods yield the equations describing the electric field of the sensor setups. The field equations contain the distinct geometric properties of the s...

Moisture is one of the most important factors affecting grain quality in storage. The grain must be dried as soon as possible after harvesting to lower moisture to a standard level. It is difficult to obtain satisfactory measurement effect on precision in capacitive grain’s moisture measurement due to many influencing factors, such as temperature, species and weight. The data confusion method o...

INTRODUCTION The sense of touch plays an important role in everyday life. It provides the body with early contact to surrounding objects. By touching an object, we can tell if it is sharp or smooth; by holding it, we can estimate its weight. Skin is the most extended sensor of the entire human body. The haptic interface gives the first feedback to object manipulation; without sensing the pressu...

Background. As interest on wearable computing [1] increases, researchers are looking for new materials to use as a support for electronics. A fabric substrate is very appealing: it is elastic and extensible [2], supported by a well known technology and produced at low-cost. State of the art. Some smart pressure-sensors interfacing with a flexible substrate have been developed, but they are eith...

This study describes a novel floor sensor network being developed to provide a competitive and universal pressure mapping technology for a wide range of medical, research and security applications. The presented sensor network consists of 16 sensor elements distributed in a 4x4 sensor matrix. The sensor elements are made of a special dielectric electro-active polymer film being capable of capac...

In this work, we report on the successful implementation of highly sensitive artificial hair-based flow-sensor arrays for sensing low-frequency air flows. Artificial hair sensors are bio-inspired from crickets’ cercal filiform hairs, one of nature’s best in sensing small air flows. The presented artificial hair sensor arrays aim for sensing performances on a par with the actual insects by means...