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.
The pressure sensor currently used in domestic rail transport industry has a poor compatibility with its media, causing a large temperature drift. Such a sensor usually fails to meet the application requirements of diesel locomotive measuring environment with multiple media and small volume. In order to meet the requirements of the diesel locomotive, this paper conducts a deep analysis on the piezoresistive...
A temperature to digital converter (TDC) that does not require either a reference generator or an ADC and that exhibits low supply sensitivity, small die area, and low power consumption is introduced. A prototype circuit designed to support power management applications over the [60 °C, 90 °C] temperature range was implemented in an IBM 0.13μm CMOS process with a 1.2V power supply for use as either...
This paper presents a self-powered wireless temperature sensor powered with a micro piezoelectric energy harvester. The piezoelectric energy harvester is a cantilever beam design fabricated with metal-MEMS process on stainless steel substrates. The energy harvester is tuned to have resonant frequency around 120Hz and the bimorph version can generate more than 400µW power output when driven with vibration...
Challenges of using standard circuit simulators to determine the presence or absence of undesired operating points are discussed. Examples are given of circuits and simulation strategies that show the presence of undesired operating points when they exist but other examples are given that show the same strategies can fail to show the presence of undesired operating points under modestly different...
The paper presents an effective and efficient method for sensor fault detection and identification within a large group of sensors based upon hierarchical cluster analysis. Fingerprints of the hierarchical clustering dendrograms are found for normal operation using normalized data, and sensor faults are detected through cluster changes occurring in the dendrogram. The proposed strategy is built into...
This paper presents a new calibration method to overcome the challenges of MEMS inertial sensors for underwater navigation. The MEMS inertial sensor module is composed of an accelerometer, gyroscope and circuit of signal process. For navigation estimation, it is easy to be influenced by errors which come from MEMS inertial sensors. In general, the sources of error can be categorized into two groups,...
We are in the presence of a new and powerful technology called wireless sensor and actor networks. There are many fields where we can apply this technology to develop varied and interesting applications: high security environments, environmental monitoring,industrial monitoring, medicine, precision agriculture. This technology brings the need to develop new frameworks in order to make easier the application...
In this paper we present the development of micromachined thermal imaging mesh for conformal sensing system. The imaging mesh consists of an m-by-n matrix of gold thermal resistor network. The sensing and processing scheme allows us to image the presence of a localized heat source over a broad piece of imaging mesh. At the same time, this approach dramatically reduces the number of sensors hence the...
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.