An Effective Thermal Flow Meter Based on TDC-GP1 Chip

In this paper, an effective and innovative thermal flow meter is presented. It is based on TDC-GP1 chip and the principle of time difference type ultrasonic flow measurement. Ultrasonic flow meter is applied widely and has some advantages such as non-contact, easily installed and maintained. But it is necessary to make the meter work more stable. The method of time difference can improve the stabilization and measured precision of the ultrasonic flow meter. TDC-GP1 is a chip which can transform time intervals into digital values with high precision. The design of the ultrasonic thermal flow meter is given details in the paper. Results of the experiments show that the innovative meter has low power consumption and high measured precision.

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Design of low-power consumption ultrasonic open channel flow meter

2009 9th International Conference on Electronic Measurement & Instruments ◽

10.1109/icemi.2009.5274535 ◽

2009 ◽

Cited By ~ 2

Author(s):

Songying Yang ◽

Guowei Liang ◽

Weiguo Zhao ◽

Dailiang Xie ◽

Zhenwei Huang

Keyword(s):

Power Consumption ◽

Low Power ◽

Channel Flow ◽

Open Channel ◽

Open Channel Flow ◽

Low Power Consumption ◽

Flow Meter

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Design and Implementation of Low-Power Time Difference Ultrasonic Flow-Meter

Advances in Intelligent and Soft Computing - Mechanical Engineering and Technology ◽

10.1007/978-3-642-27329-2_64 ◽

2012 ◽

pp. 469-475 ◽

Cited By ~ 1

Author(s):

Liu Qiang ◽

Wang Rang-ding ◽

Chen Chang-gen

Keyword(s):

Low Power ◽

Time Difference ◽

Flow Meter ◽

Design And Implementation ◽

Ultrasonic Flow Meter

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The Study of Low-Power Consumption Heat Meter Based on MSP430

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.128-129.735 ◽

2011 ◽

Vol 128-129 ◽

pp. 735-740

Author(s):

Wei Guo Zhao ◽

Xue Song Zhao

Keyword(s):

Power Consumption ◽

Low Power ◽

Flow Measurement ◽

Correction Method ◽

Floating Point ◽

Low Power Consumption ◽

Measurement Circuit ◽

Heat Meter ◽

Long Distance ◽

Distance Communication

A low-power consumption heat meter with long-distance communication was designed based on MSP430F413 and TDC-GP2. The new flow measurement circuit and correction method were introduced in detail, which improved the accuracy of the heat meter effectively. In order to reduce the power consumption, the running time of the CPU was minimized, the floating-point operation was avoided, and the communication circuit was designed specially. The experiments showed the design is valid.

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Research on High-Accuracy Low-Power Ultrasonic Flow Measurement and Instrument

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.301-303.646 ◽

2011 ◽

Vol 301-303 ◽

pp. 646-652

Author(s):

Wei Guo Zhao ◽

Xue Song Zhao

Keyword(s):

Power Consumption ◽

Flow Measurement ◽

Measurement Method ◽

High Accuracy ◽

Flow Meter ◽

Micro Power ◽

Operating Current ◽

Average Operating ◽

Ultrasonic Flow Meter ◽

High Power Consumption

In order to solve the problem of low accuracy and high power consumption, A new ultrasonic flow measurement method was proposed in this paper. With this method, the influence of the delay-time in the circuit was eliminated,the temperature of fluid was compensated automaticly and the accuracy of the flow measurement was improved. The ultrasonic flow-meter was designed with the micro-power timing chips TDC-GP2 and MSP430F435, which reduced the power consumption effectively. The experimental results showed that the accuracy of the ultrasonic flow-meter was 1.5% and the average operating current was lower than 35uA.

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Optimal design of a high homogeneous and small-size shim coil for atomic spin gyroscope based on 0-1 linear programming

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209319 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 165-172

Author(s):

Dongge Deng ◽

Mingzhi Zhu ◽

Qiang Shu ◽

Baoxu Wang ◽

Fei Yang

Keyword(s):

Linear Programming ◽

Power Consumption ◽

Low Power ◽

Optimization Design ◽

Structural Parameters ◽

Axial Position ◽

Low Power Consumption ◽

Optimal Method ◽

Atomic Spin ◽

Shim Coil

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.

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