Kraftkompensations-Meßumformer für Mikrodruckdifferenzen / Α power compensation measurement transducer for micropressure differences

1983 ◽  
Vol 50 (JG) ◽  
Author(s):  
P. KRISCHKER
Keyword(s):  
Measurement Transducer ◽  
Compensation Measurement

Sensor system for use with low intensity pulsed ultrasound

Sensor Review ◽  
2019 ◽  
Vol 39 (6) ◽  
pp. 828-834
Author(s):  
Andreas Diermeier ◽  
Dirk Sindersberger ◽  
Peter Angele ◽  
Richard Kujat ◽  
Gareth John Monkman
Keyword(s):  
Biological Fluids ◽  
Medical Science ◽  
Excitation Frequency ◽  
Radiation Force ◽  
Cost Effective ◽  
Growth Stimulation ◽  
Future Research ◽  
Measurement Transducer ◽  
Content Type

Purpose Ultrasound is a well-established technology in medical science, though many of the conventional measurement systems (hydrophones and radiation force balances [RFBs]) often lack accuracy and tend to be expensive. This is a significant problem where sensors must be considered to be “disposable” because they inevitably come into contact with biological fluids and expense increases dramatically in cases where a large number of sensors in array form are required. This is inevitably the case where ultrasound is to be used for the in vitro growth stimulation of a large plurality of biological samples in tissue engineering. Traditionally only a single excitation frequency is used (typically 1.5 MHz), but future research demands a larger choice of wavelengths for which a single broadband measurement transducer is desirable. Furthermore, because of implementation conditions there can also be large discrepancies between measurements. The purpose of this paper deals with a very cost-effective alternative to expensive RFBs and hydrophones. Design/methodology/approach Utilization of cost-effective piezoelectric elements as broadband sensors. Findings Very effective results with equivalent (if not better) accuracy than expensive alternatives. Originality/value This paper concentrates on how very cost-effective piezoelectric ultrasound transducers can be implemented as sensors for ultrasound power measurements with accuracy as good, if not better than those achievable using radiation force balances or hydrophones.

A new preset refueling mode for gasoline dispenser using frequency converter and flow rate signals

2016 ◽  
Vol 230 (6) ◽  
pp. 440-446
Author(s):  
Yajun Liu ◽  
J Cai ◽  
ZY Wang ◽  
ZY Huang
Keyword(s):  
Energy Efficiency ◽  
Flow Rate ◽  
Rotational Speed ◽  
Frequency Converter ◽  
Solenoid Valve ◽  
Measurement Transducer ◽  
Variable Speed ◽  
Service Station ◽  
Pumping System

Fuel dispenser is an integrated fuel pumping and metering system for automotive refueling at the service station. In this paper, we develop a preset refueling mode for the dispenser. A frequency converter and the flow rate signal from the measurement transducer are utilized instead of the solenoid valve, which is used to control the flow rate in the traditional refueling mode. With variable speed pumping system, the rotational speed of the pump is adjusted to achieve the desired flow rate and head necessary for the application. All the experiments were operated on a real dispenser system. How the frequency influences the refueling accuracy is observed. Through choosing a suitable frequency, not only accuracy but also energy efficiency improves compared with the traditional refueling mode. It is able to provide a reference for authority to fill in gaps in low-quantity (less than 5 L) refueling.

scholarly journals A high sensitive fiber-optic strain sensor with tunable temperature sensitivity for temperature-compensation measurement

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Jie Hu ◽  
Hui Huang ◽  
Min Bai ◽  
TingTing Zhan ◽  
ZhiBo Yang ◽  
...  
Keyword(s):  
Temperature Sensitivity ◽  
Temperature Compensation ◽  
Fiber Optic ◽  
Strain Sensor ◽  
Compensation Measurement

scholarly journals Current Measurement Transducer Based on Current-To-Voltage-To-Frequency Converting Ring Oscillator with Cascade Bias Circuit

Sensors ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 493
Author(s):  
Jongha Park ◽  
Jung-Hyun Park ◽  
Seong-Ook Jung
Keyword(s):  
Three Dimensional ◽  
Complementary Metal Oxide Semiconductor ◽  
Cmos Technology ◽  
Measurement Range ◽  
Ring Oscillator ◽  
Oxide Semiconductor ◽  
Measurement Transducer ◽  
Current Output ◽  
Differential Nonlinearity ◽  
Rail To Rail

We propose a ring oscillator (RO) based current-to-voltage-to-frequency (I–V–F) converting current transducer with a cascade bias circuit. The I–V–F converting scheme guarantees highly stable biasing against RO, with a rail-to-rail output operation. This device was fabricated using National NanoFab Center (NNFC) 180 nm complementary metal-oxide-semiconductor (CMOS) technology, which achieves a current resolution of 1 nA in a measurement range up to 200 nA. A noise floor of 11.8 pA/√Hz, maximum differential nonlinearity (DNL) of 0.15 in 1 nA steps, and rail-to-rail output with a 1.8 V power supply is achieved. The proposed transducer can be effectively applied to bio-sensing devices requiring a compact area and low power consumption with a low current output. The fabricated structure can be applied to monolithic-three-dimensional integration with a bio-sensing device.

scholarly journals Compensation Measurement Study for Aspherical Primary Mirror of Space Camera with CGH

2020 ◽  
Vol 887 ◽  
pp. 012017
Author(s):  
Xiaolei Liu ◽  
Xiaofeng Sun ◽  
Xiaomeng Dong ◽  
Dong Yang
Keyword(s):  
Primary Mirror ◽  
Measurement Study ◽  
Compensation Measurement

Strain-compensation measurement and simulation of InGaAs/GaAsP multiple quantum wells by metal organic vapor phase epitaxy using wafer-curvature

2011 ◽  
Vol 110 (11) ◽  
pp. 113501 ◽  
Author(s):  
ShaoJun Ma ◽  
Hassanet Sodabanlu ◽  
Kentaroh Watanabe ◽  
Masakazu Sugiyama ◽  
Yoshiaki Nakano
Keyword(s):  
Quantum Wells ◽  
Vapor Phase ◽  
Vapor Phase Epitaxy ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Wafer Curvature ◽  
Organic Vapor ◽  
Strain Compensation ◽  
Metal Organic ◽  
Compensation Measurement

The high pulse voltage measurement transducer with nanosecond step response rise time

Metrologiya ◽  
2018 ◽  
pp. 61-67
Author(s):  
K.Yu. SAKHAROV ◽  
◽  
M.Yu. DENISOV ◽  
V.L. YGOLEV ◽  
R.A. RODIN ◽  
...  
Keyword(s):  
Rise Time ◽  
Pulse Voltage ◽  
Step Response ◽  
Measurement Transducer ◽  
Voltage Measurement ◽  
High Pulse

A torque measurement transducer system

1963 ◽  
Vol 82 (10) ◽  
pp. 621-625 ◽  
Author(s):  
Anson A. Emmerling
Keyword(s):  
Measurement Transducer ◽  
Torque Measurement
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