Track topics on Twitter Track topics that are important to you
In a surface acoustic wave (SAW) wireless sensor with a reflective delay line structure, three reflectors are often used to eliminate 2π ambiguity of phase measurement. The maximum range of the measured parameter and the maximum accuracy have recently been attracting much research attention. In this paper, an analytical formula for all the factors influencing the measurement range and accuracy of the delay line SAW sensor are deduced for the first time. The factors include: the sensor sensitivity, the topology of the delay line, the available wireless bandwidth and the allowed maximum phase measuring error of the reading system, which is easier to retrieve and more fully describes the possible noises than SNR. Additionally, many designers believe that increasing the reflector could improve accuracy continuously or realize multi-resolution measurement. However, they ignore some certain criteria that the reflector location must satisfy. The reachable maximum accuracy by every increase of a reflector is also presented. A SAW temperature sensor system using 128° YX-LiNbO3 is designed to verify the above theoretical analysis.
This article was published in the following journal.
Name: Sensors (Basel, Switzerland)
To evaluate the effects of ankle taping, bracing, and fibular reposition taping (FRT) on running biomechanics as measured with wearable sensors. Approach: A crossover study design was employed as...
In this paper, a three-line LFB was successfully developed by adding a thrombin line to a conventional two-line LFB for the detection of thrombin in a wide range of human serum. We introduced a thromb...
Blade tip clearance (BTC) measurement and active clearance control (ACC) are becoming crucial technologies in aero-engine health monitoring so as to improve the efficiency and reliability as well as t...
The external acceleration of a fast-moving body induces uncertainty in attitude determination based on inertial measurement unit (IMU) signals and thus, frequently degrades the determination accuracy....
Not much is known about how people with diabetes store their insulin. Objective of our evaluation was to analyze at which temperature insulin is stored in domestic refrigerators and when opened/carrie...
The purpose of this clinical study is to validate the SpO2 accuracy of the Medline ReNewal pulse oximetry sensors during non-motion conditions over the range of 70-100% SaO2 as compared to...
The general purpose of this study is to evaluate the feasibility, accuracy and performance of the Nellcor/Covidian 600-x and the Masimo rainbow technologypediatric and neonatal oximetry se...
Pulse oximetry monitoring is considered a standard physiological measurement and is used by clinicians in everyday situations to estimate arterial oxygen saturation. There are two devices ...
A trial conducted within the company with a new non-contact respiration rate (RR) sensor. The device was compared for accuracy in RR measurement with a cleared device, the SOMNOScreen Easy...
In this study, the investigators are testing the accuracy of a wrist-worn measurement device by comparing its blood pressure measurement to arterial line (A-line) blood pressure monitors. ...
The closeness of a determined value of a physical dimension to the actual value.
The ratio of maximum blood flow to the MYOCARDIUM with CORONARY STENOSIS present, to the maximum equivalent blood flow without stenosis. The measurement is commonly used to verify borderline stenosis of CORONARY ARTERIES.
A class of devices combining electrical and mechanical components that have at least one of the dimensions in the micrometer range (between 1 micron and 1 millimeter). They include sensors, actuators, microducts, and micropumps.
Measurement of the maximum rate of airflow attained during a FORCED VITAL CAPACITY determination. Common abbreviations are PEFR and PFR.
The noninvasive measurement or determination of the partial pressure (tension) of oxygen and/or carbon dioxide locally in the capillaries of a tissue by the application to the skin of a special set of electrodes. These electrodes contain photoelectric sensors capable of picking up the specific wavelengths of radiation emitted by oxygenated versus reduced hemoglobin.