A High-Resolution Ultrasonic Distance Measurement System Using Vernier Caliper Phase Meter

Lee, Ke-Yu; Huang, Chih-Hsien; Huang, S. S.; Huang, K. N.; Young, Ming‐Shing

doi:10.1109/tim.2012.2203871

Cited by 25 publications

(12 citation statements)

References 17 publications

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“…Further attempts to improve the measurement resolution of the ultrasonic rangefinders are based on linear frequency modulation or composite modulation [14]; binary frequency shift-keyed signal and phase detection [15]; Vernier caliper phase metre [16]; and so on. However, these methods require broadband ultrasonic receivers and transmitters, sufficiently increasing the hardware cost.…”

Section: Related Workmentioning

confidence: 99%

Ultrasonic rangefinder with resolution in hundredths of the probing signal's wavelength for the mobile rescue robot

Goll

Maximova

2019

ACTA IMEKO

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The main goal of this research is to increase the measurement resolution of ultrasonic rangefinders to meet the needs of vital signs noncontact registration based on chest movements. The two-phase method is proposed to make distance estimates by sending probe pulse trains, calculating the phase spectrum of the echo signal’s envelope, and tracking its relevant components. During the first phase, rough Time-of-Flight (ToF)-based estimates are made. During the second phase, this estimate is corrected based on the phase spectrum of the echo signal’s envelope, the phase ambiguity is removed, and the relevant components are determined. The final estimate of the human chest displacement is calculated based on these relevant components. The output data rate is the same as for the ToF-based measurements, but the measurement resolution is increased to one hundredth of the ultrasonic wavelength. The experiment results are provided for the both model and the real human chest displacements caused by the respiration and heartbeat processes.

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Section: Related Workmentioning

confidence: 99%

Ultrasonic rangefinder with resolution in hundredths of the probing signal's wavelength for the mobile rescue robot

Goll

Maximova

2019

ACTA IMEKO

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“…If the edge alignment is detected after m delays of τ have been performed. Then the measurement result of the phase difference can be obtained from the Equation (1). Though the principle of PPS is simple, difficulties exist in the implementation of the method.…”

Section: Principle Of Progressive Phase Shiftmentioning

confidence: 99%

“…Precise measurements of phase differences are frequently required in applications of frequency synchronization, satellite navigation, laser ranging finders, communication networks and signal demodulation [1][2][3][4][5][6][7][8][9]. Phase difference measurement can be realized by many approaches.…”

Section: Introductionmentioning

confidence: 99%

Phase Difference Measurement Method Based on Progressive Phase Shift

Zhang

Wang

et al. 2018

Electronics

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This paper proposes a method for phase difference measurement based on the principle of progressive phase shift (PPS). A phase difference measurement system based on PPS and implemented in the FPGA chip is proposed and tested. In the realized system, a fully programmable delay line (PDL) is constructed, which provides accurate and stable delay, benefitting from the feed-back structure of the control module. The control module calibrates the delay according to process, voltage and temperature (PVT) variations. Furthermore, a modified method based on double PPS is incorporated to improve the resolution. The obtained resolution is 25 ps. Moreover, to improve the resolution, the proposed method is implemented on the 20 nm Xilinx Kintex Ultrascale platform, and test results indicate that the obtained measurement error and clock synchronization error is within the range of ±5 ps.

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“…Figure 13 illustrates the principle of this technique. The measurement of distance using ultrasonic signal is an extensively used technique in many applications which provides accurate measurement of distance with low cost [26][27][28]. The concept of horizontal distance measurement using ultrasonic signal is modified and used to measure the vertical height from the water surface.…”

Section: Boat Submergence Depth Informationmentioning

confidence: 99%

Techno-financial analysis and design of on-board intelligent-assisting system for a hybrid solar–DEG-powered boat

Mamun

Chowdhury

Kaiser

et al. 2016

Int J Energy Environ Eng

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In this paper, we present a financial feasibility analysis and design of an on-board-assisting system for a hybrid solar-diesel-powered boat. The major components of this boat are solar panel, battery bank, speed and direction controller for dc motor, brushless dc motor, diesel engine generator (DEG), and intelligent-assisting system (IAS) to assist the sailor. A DEG is considered to maintain the ability to run the system even during night-time, cloudy, and partially cloudy days. The energy demand posed by the electrical system requires maintaining an appropriate balance between the energy sources-done by an on-board-processing element which facilitates the system to run automatically. The capacity of the battery bank is considered large enough to satisfy electrical power requirement of the system for a whole day during noncharging periods. The optimal configuration for the hybrid system is selected from HOMER simulation results, whereas a financial feasibility analysis of the proposed hybrid solar and DEG-powered boat is performed using a clean energy management software called RETScreen. The IAS also provides solutions to the common naval hazards, such as over-weight and inclement weather by employing depth of submergence detector and GSM network interface. Financial analysis reveals that the proposed system is financially feasible, while tests showed that IAS successfully provides navigational supports to sailors.

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A High-Resolution Ultrasonic Distance Measurement System Using Vernier Caliper Phase Meter

Cited by 25 publications

References 17 publications

Ultrasonic rangefinder with resolution in hundredths of the probing signal's wavelength for the mobile rescue robot

Ultrasonic rangefinder with resolution in hundredths of the probing signal's wavelength for the mobile rescue robot

Phase Difference Measurement Method Based on Progressive Phase Shift

Techno-financial analysis and design of on-board intelligent-assisting system for a hybrid solar–DEG-powered boat

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