... addresses limitations in validity across different intensity domains and explores solutions integrating advanced analytics and signal processing. Design/methodology/approach Over 100 peer-reviewed sources were systematically reviewed to assess the validity and limitations of PPG sensors across...

... current measurement with harmonic signal processing to provide a reliable, nonintrusive alternative for pipeline monitoring. This method is adaptable to a variety of working conditions and suitable for long-distance use, offering great potential for improving pipeline safety. Corresponding author...

... and wearable use. Advances such as PEDOT:PSS coatings, nanomaterial enhancements and hybrid electrode designs enable high-density EMG recording with improved stability. These hardware improvements, when integrated with advanced signal processing and machine learning algorithms, allow for more precise...

... is adopted. The key technologies of the round inductosyn are classified into signal processing and angle calculation, testing, establishment of error models and compensation. Eventually, a systematic review for each module is conducted. Findings This paper comprehensively overviews the technologies...

... as follows: In Section 2 is presented the techniques used in signal processing well ways to identify a healthy engine from a faulty one. In Section 3 the experimental procedure is presented. Section 4 presents the main results and discussions. Finally, Section 5 draws the conclusions. As mentioned...

... can be described in the following steps. © Emerald Group Publishing Limited 2014 Signal processing Sensors Surgery Over the past few decades, electronic nose (Enose) has been extensively studied. It is now successfully used in many fields, such as quality assessment of food...

... the performance of E-nose in wound monitoring and paves the way for the clinical detection of E-nose. Signal processing Sensors Surgery As has been introduced in Section 1, to make E-nose achieve an ideal performance, both the weighting coefficients of sensors and the parameters’ setting...

.... In addition, it is effective in the brake test with a real vehicle. Guoyu Lin can be contacted at: Andrew.Lin@seu.edu.cn © Emerald Group Publishing Limited 2014 Signal processing Sensors Calibration Data capture Force Automobile test technology is widely used in many fields...

... circuits for the range below cut-off frequency and the removal need to be done by the follow-up digital signal processing procedure. Figure 4 shows the output signal of low-pass filter and its magnitude spectrum. Comparing with Figure 2 , we can find that most of disturbances and noises have been...

... between the performances in texture classification offered by the LBP texture descriptors and the standard signal processing texture analysis techniques based on Gabor filters and S‐Filters. To evaluate the performance of the texture extraction techniques based on filtering the image with large banks...

... system which includes the laser, the string, position sensitive detector (PSD) and the corresponding signal processing circuit. Design/methodology/approach PSD is an optical semiconductor sensor that can fast locate the luminous spot position precisely, which means that it can output different...

... and resolution; and 3. new signal processing algorithms give very robust temperature performance. However, these performance improvements have been achieved without any increases in cost. In fact, for mid‐volume applications (for which an application specific integrated circuit [ASIC] development...

... to be designed. Ruzairi Abdul Rahim can be contacted at: ruzairi@fke.utm.my © Emerald Group Publishing Limited 2009 Flow Signal processing Sensors Pipelines The vast majority of flow meters provide a measure of volumetric flow. For fuel flows, it would be preferable to measure mass...

...‐zero false alarm rate to a user to give best confidence and maximum decision capability. Findings There are significant new requirements for through‐wall radar which a combination of UWB, continuous wave, and SAR techniques with recent signal processing advances and the advent of low‐cost radio...

... technology for those who want to know and research on this area. Zhigang Feng can be contacted at: fzg1023@yeah.net © Emerald Group Publishing Limited 2007 Sensors Uncertainty management Fault tolerance Signal processing Traditional sensors can only output measurement value...

... to be considered. This factor is also accounted for in K₂ and g_ij. Radiofrequencies Identification Control systems Signal processing Information is the fuel that drives the economy and the society today (Wyld, 2005). As manufacturing operations go...

.... In that section the signal is transmitted by a very small power level and any power losses there cannot be compensated for by further signal processing. The output power of frequency sensors is in general considerably higher than that of voltage‐output sensors. The stability of the frequency generated...

... is calculated in relation to the task of interfacing to a theoretical thin‐film conducting‐polymer sensor. Signal processing Interfaces Sensors Electrical circuits For many animals, smell can easily rank as the most important sense; the most discriminating sense and the sense on which survival...

.... "Principles of Radar and Sonar Signal Processing" will be of interest to students, researchers and professional engineers working with or interested in,radar or sonar systems. It provides detailed descriptions of new and developing technologies for radar signal processing. © MCB UP Limited 2003...

... piece of software from their Web site. © MCB UP Limited 2002 Control systems Signal processing The MEDACS 2000 series from Status Instruments represents a totally new and revolutionary concept in DIN rail signal conditioning modules, offering a high degree of functionality...