Measurement System of Bubbly Flow Using Ultrasonic Velocity Profile Monitor and Video Data Processing Unit, (II)

Fungsi korelasi–rentas kebiasaannya memerlukan masa pengiraan berkomputer yg panjang, maka ia agak sukar untuk menghasil profil halaju dalam masa yang singkat terutama sekali dalam mod masa-nyata. Oleh itu, system pengagihan data dibangunkan dengan menggunakan unit pemprosesan data berganda dan konsep unit pemprosesan data selari untuk mempercepatkan proses penghasilan profil halaju. Penulisan ini juga membentangkan konfigurasi system pemprosesan data yang baru dan bagaimana ia beleh menggantikan unit pemprosesan tunggal untuk mengira profil halaju dengan lebih pantas. Kata kunci: Profil halaju; fungsi korelasi–rentas; sistem pengagihan data The cross–correlation function usually takes a long computation time, so it is quite hard to produce a velocity profile in a short time especially in online mode. Thus, data distribution system is developed by using multiple data processing units and concept of parallel data processing to speed up the process of producing velocity profile. This paper also presents the configuration of new data processing system and how it can replace single processing unit to compute velocity profile faster. Key words: Velocity profile; cross–correlation function; data distribution system

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An ATCA and FPGA-based Data Processing Unit for PANDA Experiment

2010 17th IEEE-NPSS Real Time Conference ◽

10.1109/rtc.2010.5750331 ◽

2010 ◽

Cited By ~ 1

Author(s):

H. Xu ◽

Z.-A. Liu ◽

Q. Wang ◽

D. Jin ◽

D. Muenchow ◽

...

Keyword(s):

Data Processing ◽

Processing Unit ◽

Data Processing Unit ◽

Panda Experiment

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Pouring Point Location Method for Concrete Pump Truck

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.635-637.1256 ◽

2014 ◽

Vol 635-637 ◽

pp. 1256-1259

Author(s):

Qin Xing ◽

Li Yin Zhang ◽

Yong Wei Sun ◽

Tao Sun ◽

Xue Hua Yu

Keyword(s):

Data Processing ◽

Processing Unit ◽

Point Location ◽

Data Processing Unit ◽

Displacement Sensors ◽

Hydraulic Cylinders ◽

Concrete Pump Truck ◽

Concrete Pump ◽

The Relationship ◽

Contraction And Expansion

A method is presented for determining the pouring point location of concrete pump truck. The method does not change the structure of the concrete pump truck, only need to replace the hydraulic cylinders of booms with the hydraulic cylinders with displacement senor, and the displacement sensors are mounted in the inside of the hydraulic cylinders and do not need any extra protection. The relationship formulas between the contraction and expansion amounts of the hydraulic cylinders and the pouring point location are derived and programmed to input into a data processing unit. The contraction and expansion amounts of the hydraulic cylinders are timely acquired and inputted into the data processing unit, then the pouring point location can be displayed in real-time on the screen of radio controller, and the workers can quickly and accurately locate the pouring point of the concrete pump truck to poured point.

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A Study of Phased Array Ultrasonic Velocity Profile Monitor for Flow Rate Measurement

Volume 6: Beyond Design Basis Events; Student Paper Competition ◽

10.1115/icone21-16601 ◽

2013 ◽

Cited By ~ 3

Author(s):

Takuya Fukumoto ◽

Keisuke Tsukada ◽

Tomonori Ihara ◽

Nobuyoshi Tsuzuki ◽

Hiroshige Kikura

Keyword(s):

Velocity Profile ◽

Ultrasonic Velocity ◽

Flow Rate ◽

Measurement System ◽

Phased Array ◽

Profile Measurement ◽

Multiple Reflections ◽

Horizontal Pipe ◽

Array Sensor ◽

Velocity Profile Measurement

A new ultrasonic velocity profile measurement system with a phased array sensor was developed for accurate flow rate measurements. This measurement system employs phased array technique to reduce noise from multiple reflections which occurs in a wedge. However, phased array technique has some difficulties — one of them is about grading lobes. Thus, the array sensor was designed to reduce the grading lobes using simple calculations. Performance of the manufactured array sensor was evaluated by experimental measurements of sound pressure distribution emitted from the array sensor, and optimal parameters to control the array sensor were obtained. Hardware and software of the ultrasonic velocity profile measurement system with a phased array sensor were also developed. The software is based on ultrasonic Doppler method. Velocity profiles of horizontal pipe flow were measured using the developed system, and the availability of the system applying a phased array sensor was confirmed.

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