Design on the Real-Time Measurement Method of Molten Metal High Temperature Based on DSP

2013 ◽  
Author(s):  
Jiao Shuqing
Keyword(s):  
High Temperature ◽  
Real Time ◽  
Molten Metal ◽  
Measurement Method ◽  
Time Measurement ◽  
The Real ◽  
Real Time Measurement

scholarly journals Real-Time Measurement of Drilling Fluid Rheological Properties: A Review

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3592
Author(s):  
Naipeng Liu ◽  
Di Zhang ◽  
Hui Gao ◽  
Yule Hu ◽  
Longchen Duan
Keyword(s):  
Decision Making ◽  
Rheological Properties ◽  
Real Time ◽  
Drilling Fluid ◽  
Time Measurement ◽  
Decision Making Process ◽  
Rate Of Penetration ◽  
The Real ◽  
Real Time Measurement ◽  
Fluid Properties

The accurate and frequent measurement of the drilling fluid’s rheological properties is essential for proper hydraulic management. It is also important for intelligent drilling, providing drilling fluid data to establish the optimization model of the rate of penetration. Appropriate drilling fluid properties can improve drilling efficiency and prevent accidents. However, the drilling fluid properties are mainly measured in the laboratory. This hinders the real-time optimization of drilling fluid performance and the decision-making process. If the drilling fluid’s properties cannot be detected and the decision-making process does not respond in time, the rate of penetration will slow, potentially causing accidents and serious economic losses. Therefore, it is important to measure the drilling fluid’s properties for drilling engineering in real time. This paper summarizes the real-time measurement methods for rheological properties. The main methods include the following four types: an online rotational Couette viscometer, pipe viscometer, mathematical and physical model or artificial intelligence model based on a Marsh funnel, and acoustic technology. This paper elaborates on the principle, advantages, limitations, and usage of each method. It prospects the real-time measurement of drilling fluid rheological properties and promotes the development of the real-time measurement of drilling rheological properties.

scholarly journals The real-time measurement of wear using ultrasonic reflectometry

Wear ◽  
2015 ◽  
Vol 332-333 ◽  
pp. 1129-1133 ◽  
Author(s):  
Henry Brunskill ◽  
P. Harper ◽  
Roger Lewis
Keyword(s):  
Real Time ◽  
Time Measurement ◽  
The Real ◽  
Real Time Measurement

Real-Time Measurement Method of Doppler Based on GPS Carrier Signals

2012 ◽  
Vol 226-228 ◽  
pp. 2050-2055 ◽  
Author(s):  
Shao Feng Dong ◽  
Bao Qiang Du ◽  
Wei Zhou
Keyword(s):  
Frequency Shift ◽  
Real Time ◽  
Measurement Method ◽  
Dynamic Range ◽  
Time Synchronization ◽  
Influencing Factor ◽  
Doppler Frequency ◽  
Time Measurement ◽  
Time Frequency ◽  
Real Time Measurement

According to Doppler effect of satellite on the time synchronization technology between satellite and the ground station, a real-time measurement method of Doppler is proposed based on GPS carrier signals. Using Doppler observations from GPS receiver, the method can real-timely measure Doppler frequency shift of GPS including dynamic Doppler and media Doppler whose error can be timely modified in the receiver end. Simulation results show that the frequency shift caused by dynamic Doppler, a main influencing factor in the course of transmission of time-frequency signal by GPS satellite, is between plus or minus several thousands Hz. Comparing to traditional measurement method of Doppler, the method makes it possible to fast track phase of signal in large dynamic range in synchronous technology.

Real-Time Measurement Method for Retardation of Eighth Waveplate Independent of Fast Axis

2011 ◽  
Vol 38 (5) ◽  
pp. 0508002 ◽  
Author(s):  
朱玲琳 Zhu Linglin ◽  
曾爱军 Zeng Aijun ◽  
李凡月 Li Fanyue ◽  
黄惠杰 Huang Huijie
Keyword(s):  
Real Time ◽  
Measurement Method ◽  
Time Measurement ◽  
Fast Axis ◽  
Real Time Measurement
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