The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We demonstrate a low-power multi-pixel volatile compounds sensing platform dedicated to Internet of Things (IoT) applications, especially for environmental monitoring and industrial control. The transducers are made of interdigitated microelectrodes within a sensor array. Each pixel is independently functionalized by polypyrrole (PPy) electropolymerization performed in a back-end process in order...
We show a wireless system that controls the light intensity of a number of light bulbs from its temperature in real time. The PID control loop is feed from a LWIR camera thermal video stream and the feedback is used to control a solid-state relay using PWM modulation. Given its low-cost, such system can be applied to consumer-oriented industries, where costs and integration requirements are key.
Tripolar concentric ring electrode (TCRE) sensors have unique properties. These sensors have been used to acquire various bio-signals such as: electroencephalography (EEG), electrocardiography (ECG), and electromyography (EMG). Compared to conventional disc electrode signals TCRE EEG (tEEG) has four times better signal-to-noise ratio, eleven times better mutual information and spatial resolution....
We demonstrate a low-power CMOS ISFET array for pH sensing which is inductively powered using NFC. Each pixel in a 3-by-3 array contains an ISFET operating in weak-inversion which detects changes in pH as a current. The output of all pixels is then averaged and converted to a frequency using a current-starved ring oscillator. We make use of a commercial NFC IC, the SIC4310, to harvest power from a...
Thanks to its unmatched specificity, electron spin resonance (ESR) spectroscopy is amongst the most powerful analytical techniques today with applications ranging from the life sciences over material science analysis to food quality control [1]. By measuring the spin of an unpaired electron, ESR spectroscopy is specifically suited to analyze free radicals, which play a major role in many diseases...
This demonstration will present an industrial process monitoring system developed at VTT and piloted at Metso Flow Control Oy for the application of valve leakage detection. The system applies a MEMs based acoustic emission sensor for the detection of valve micro fractures manifested as acoustic emissions in high-pressure valves. A whole system is developed including an asynchronous ultra-low power...
In recent years, our research group has developed state of the art 3D sonar sensors [1]-[3] which use a low-cost MEMS microphone array for real-time acoustic imaging in air. Using this sensor, various robotic applications have been developed [2], including obstacle avoidance and corridor following and SLAM [1]. The developed sensor is capable of localizing an arbitrary number of reflectors, and generates...
Tuning fork resonators are widely used across a large number of sensing applications. In our paper submitted to IEEE Sensors 2017[1] we propose and demonstrate remote optical interrogation of tuning fork resonators along a single optical beam using range-resolved interferometry (RRI) [2] as a new route to optical tuning fork interrogation. This approach allows direct measurement of the differential...
We present a miniaturized universal hardware module for acoustic pattern recognition in various types of multi-channel sensor signals. The module implements a configurable signal analysis (signal transforms, filter banks, statistical transforms) and GMM-HMM recognizer. The main hardware components are a XC7A75T FPGA performing almost all the computations, a TMS320C6746 digital signal processor organizing...
Level sensors find numerous applications in many industries to automate the processes involving chemicals. Recently, some commercial ultrasound based level sensors are also being used to automate the drug delivery process [1]. Some of the most desirable features of level sensors to be used for medical use are their non-intrusiveness, low cost and consistent performance. In this demo, we will present...
An electronic skin (e-skin) is an artificial smart skin that can provide similar sense of touch to robots and artificial prostheses by mimicking some of the features of human skin. In this regard, tactile e-skin is needed for accurate haptic perception in robots, amputees, as well as, wearable electronics. For example, a flexible e-skin provided with touch/pressure sensors will allow robots to detect...
Fiber optic sensing for strain, temperature and other physical variables has found niche markets in industries such as oil and gas production and homeland security. These sensors typically use interferometric techniques to measure subwavelength changes in the refractive index of the fiber or the distance between two reflecting elements.
This study proposes a novel cuffless photoplethysomgrphy (PPG) sensor for continuous blood pressure measurement. PPG is an optical noninvasive approach for sensing intravascular blood volume changes. The blood pressure algorithms are based on optical and fluid dynamic theories and the derived formula are verified by physical simulation as well as clinical experiment. Furthermore, in order to obtain...
In surveillance and monitoring applications, motion detection using commercial cameras with off-line high-level algorithm processing is not efficient. They have to force the high-level processor continuously analyze the acquired high-resolution images. This causes a large waste of power, since there are no events in most of the cases. Embedding low-level image processing on-chip will make the system...
With the increased global population, smart living is an increasingly important criteria to ensure equal opportunities for all. Therefore, what is Smart Living? The first time when we tossed this terminology seven years back, we thought reducing complexities in human life. Today we believe it more. However, smart living for all complicates the technological need further. As by all, we mean any age...
Because of the extensive application prospect of flexible electronics, a capacitive humidity sensor fabricated on a flexible porous Polytetrafluoroethylene (PTFE) substrate is reported in this paper. Silver nanowires as a floating electrode were dispersed onto a PTFE substrate. Then, as humidity sensitive material, polyimide (PI) was spin-coated onto the silver nanowires. Finally, a pair of interdigitated...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.