Sensitivity characteristics of electrostatic sensor using finite element modeling

Tajdari, Teimour; Rahmat, M. F.; Thuku, Iliya Tizhe

doi:10.1109/iccsce.2012.6487140

Cited by 3 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mathematical model of electrostatic sensor have been reported from circular-ring electrode, quarter-ring electrode, pin electrode, and rectangular electrode by several researchers [5][6][7]. Detailed mathematical model to describe the characteristics of rectangular electrodes is available in literature [8].…”

Section: Introductionmentioning

confidence: 99%

Optimized Rectangular Electrode of Electrostatic Sensor

Rahmat

2018

IJIE

View full text Add to dashboard Cite

This paper focuses on optimization of rectangular electrodes of electrostatic sensors. Fundamental characteristics of these electrodes are significant in order to use them in many industries that deal with particles and powders. In this study, Multi-Objective Particle Swarm Optimization (MOPSO) technique has been employed to obtain optimal value of electrode designs including length and thickness. Commercial MATLAB software is used in the optimization. Special sensitivity and statistical error have been utilized as conflict objective functions to recognize optimal sizes of electrodes. The optimization results are compared with the experimental data available in current study. From the observed results, the optimum sizes of length and thickness of rectangular electrode was equal to 0.6 cm and 0.5 cm, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimized Rectangular Electrode of Electrostatic Sensor

Rahmat

2018

IJIE

View full text Add to dashboard Cite

show abstract

“…Induced signals are weak due to the electrostatic pipeline shields. Numerical models of ring-shaped sensors and sensors array were built based on FEM methods in [ 15 , 20 – 23 ]. However, as mentioned before, FEM methods are approximate and usually will take a long time to build the model.…”

Section: Introductionmentioning

confidence: 99%

Analytical and Numerical Investigations into Hemisphere-Shaped Electrostatic Sensors

Lin

Chen

et al. 2014

Sensors

View full text Add to dashboard Cite

Electrostatic sensors have been widely used in many applications due to their advantages of low cost and robustness. Their spatial sensitivity and time-frequency characteristics are two important performance parameters. In this paper, an analytical model of the induced charge on a novel hemisphere-shaped electrostatic sensor was presented to investigate its accurate sensing characteristics. Firstly a Poisson model was built for electric fields produced by charged particles. Then the spatial sensitivity and time-frequency response functions were directly derived by the Green function. Finally, numerical calculations were done to validate the theoretical results. The results demonstrate that the hemisphere-shaped sensors have highly 3D-symmetrical spatial sensitivity expressed in terms of elementary function, and the spatial sensitivity is higher and less homogeneous near the hemispherical surface and vice versa. Additionally, the whole monitoring system, consisting of an electrostatic probe and a signal conditioner circuit, acts as a band-pass filter. The time-frequency characteristics depend strongly on the spatial position and velocity of the charged particle, the radius of the probe as well as the equivalent resistance and capacitance of the circuit.

show abstract

Simulation of electrostatic particulate matter sensor regeneration based on the particulate deposition patterns

Liu,

Wang,

Sun

et al. 2024

View full text Add to dashboard Cite

Purpose This study aims to establish a multi-physics-coupled model for an electrostatic particulate matter (PM) sensor. The focus lies on investigating the deposition patterns of particles within the sensor and the variation in the regeneration temperature field. Design/methodology/approach Computational simulations were initially conducted to analyse the distribution of particles under different temperature and airflow conditions. The study investigates how particles deposit within the sensor and explores methods to expedite the combustion of deposited particles for subsequent measurements. Findings The results indicate that a significant portion of the particles, approximately 61.8% of the total deposited particles, accumulates on the inside of the protective cover. To facilitate rapid combustion of these deposited particles, a ceramic heater was embedded within the metal shielding layer and tightly integrated with the high-voltage electrode. Silicon nitride ceramic, selected for its high strength, elevated temperature stability and excellent thermal conductivity, enables a relatively fast heating rate, ensuring a uniform temperature field distribution. Applying 27 W power to the silicon nitride heater rapidly raises the gas flow region's temperature within the sensor head to achieve a high-temperature regeneration state. Computational results demonstrate that within 200 s of heater operation, the sensor's internal temperature can exceed 600 °C, effectively ensuring thorough combustion of the deposited particles. Originality/value This study presents a novel approach to address the challenges associated with particle deposition in electrostatic PM sensors. By integrating a ceramic heater with specific material properties, the study proposes an effective method to expedite particle combustion for enhanced sensor performance.

show abstract

Sensitivity characteristics of electrostatic sensor using finite element modeling

Cited by 3 publications

References 13 publications

Optimized Rectangular Electrode of Electrostatic Sensor

Optimized Rectangular Electrode of Electrostatic Sensor

Analytical and Numerical Investigations into Hemisphere-Shaped Electrostatic Sensors

Simulation of electrostatic particulate matter sensor regeneration based on the particulate deposition patterns

Contact Info

Product

Resources

About