Transformerless Ultrasonic Ranging System with the Feature of Intrinsic Safety for Explosive Environment

Wang, Yu; Qiao, Yuheng; Zhang, Hongjuan; Gao, Yang; Zhang, Ming; Tan, Heng; Wang, Dong; Jin, Baoquan

doi:10.3390/s18124397

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…Due to its advantages of non-contact measurement, low cost, easy operation, and rapid measurement, it has been widely used in industrial measurements, safety warnings, scientific obstacle avoidance by robots, and ultrasonic motors [ 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. Particularly in distance measurement, as researchers continue to explore and further expand the ultrasonic ranging technology [ 24 , 25 , 26 , 27 , 28 ], measurement accuracy and the stability of ultrasonic ranging are more suitable for industrial control and high-level instruments.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Linear Springs’ Stiffness Factor Using Ultrasonic Sensing

Zhang

et al. 2022

Sensors

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We designed an ultrasonic testing instrument that consisted of a single-chip microcomputer module, a digital display module, and an ultrasonic sensor module, which conveniently eliminated the troubles faced by the traditional Jolly’s scale. For comparison purpose, three linear springs’ stiffness factors were measured by Jolly’s scale and by our ultrasonic testing instrument. We found that our instrument could more conveniently and in real time display the distance values between the ultrasonic ranging module and the horizontal bottom plate when loading different weights. By processing these distance data, we found that our instrument was more convenient for obtaining the linear springs’ stiffness factors and that the results were more accurate than those of Jolly’s scale. This study verified that our instrument can accurately realize the performance of Jolly’s scale under diverse temperatures and humidity levels with high data reliability and perfect stability.

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Section: Introductionmentioning

confidence: 99%

Measurement of Linear Springs’ Stiffness Factor Using Ultrasonic Sensing

Zhang

et al. 2022

Sensors

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“…e inner-intrinsically safe buck-boost converter (IISBBC) must not ignite explosive gases when an inductordisconnected discharge (IDD) occurs [3][4][5]. Intrinsic safety is achieved by limiting the ignition capability of components in the IISBBC [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design Method for Inner-Intrinsically Safe Buck-Boost Converters Based on Ignition Capability

Yongxiu

2021

Mathematical Problems in Engineering

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Intrinsically safe switching converters are the best choice for low-voltage DC power supplies in explosive environments (such as coal mine). To obtain the optimal design method of the inner-intrinsically safe buck-boost converter (IISBBC), the equivalent circuits for various switching states and operating conditions of the buck-boost converter are studied, and the most dangerous inductor-disconnected discharge (IDD) condition of the buck-boost converter is obtained. Based on this condition, the IDD behavior of the IISBBC is studied. According to the minimum ignition curves (MICs) of the resistive circuit and the simple inductive circuit, the expressions describing the IDD ignition capability of the IISBBC in terms of the critical ignition power and the critical ignition energy are derived. The IDD has the strongest ignition capability based on power when the IISBBC is working at its maximum input voltage and minimum load resistance, and it has the strongest ignition capability based on energy when the IISBBC is working at its minimum input voltage and minimum load resistance. The converter is inner-intrinsically safe only when the maximum arc power is less than the critical ignition power and the inductive energy is less than its critical value. By incorporating the proposed criterion, the optimal design method for IISBBCs that meets the demands of electric and inner-intrinsic safety performance is obtained. Based on this method, the design range of the inductance and capacitance and the optimal inductance to give the IISBBC the best inner-intrinsic safety performance are obtained. The feasibility and reliability of the proposed optimal design method are demonstrated by an explosion test.

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Computer-Based Experiment for the Motion of Spring Oscillator on a Linear Air Track Using Ultrasonic Sensor

Wu,

Xu,

Zhou

et al. 2024

Sensors

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In the present paper, an affordable innovative physical experimental equipment consisting of an upper computer, an ultrasonic sensor module, and an Arduino microcontroller has been designed. The relationship between the position of the slider fixed on two springs and time is measured by using the ultrasonic sensor module. A system for slider motion data and image acquisition is constructed by using the LabVIEW interface of Arduino UNO R3. The purpose of this experiment is to demonstrate and interpret the propagation of waves represented by harmonic motion. The spring oscillator system including a slider and two springs is measured and recorded, and the motion can be realized using curve fitting to the wave equation in Sigmaplot. The vibration periods obtained from experimental measurements and curve fitting of the wave equation are 1.130 s and 1.165 s, respectively. The experimental data are in good agreement with the theoretical model. The experimental measurement results show that the maximum kinetic energy is 0.0792 J, the maximum potential energy is 0.0795 J, and the total energy at the position of half the amplitude is 0.0791 J. The results verify the mechanical energy conservation of spring oscillator system in a short time. This self-made instrument has improved the visualization and the automation level of the corresponding experiments.

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Transformerless Ultrasonic Ranging System with the Feature of Intrinsic Safety for Explosive Environment

Cited by 3 publications

References 19 publications

Measurement of Linear Springs’ Stiffness Factor Using Ultrasonic Sensing

Measurement of Linear Springs’ Stiffness Factor Using Ultrasonic Sensing

Optimal Design Method for Inner-Intrinsically Safe Buck-Boost Converters Based on Ignition Capability

Computer-Based Experiment for the Motion of Spring Oscillator on a Linear Air Track Using Ultrasonic Sensor

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