Helix-shaped CRLH-mass flow detector for the cross-sectional detection of inhomogeneous distributed pneumatic conveyed pulverized solids

Penirschke, Andreas; Angelovski, Aleksandar; Jakoby, Rolf

doi:10.1109/imtc.2011.5944314

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…Increasing of the crosssectional sensitivity of the sensor can be achieved in two ways: reducing the angle between the adjacent cells which leads to increasing the length, or inserting a second CRLH-TL radially-arranged by 90°to the first line so the sensor length remains the same [6]. Figure 9 shows the CST model of a CRLH-TL sensor array with two helix-shaped TLs.…”

Section: Double Crlh-tl Sensormentioning

confidence: 99%

CRLH-TL Sensors for Flow Inhomogeneties Detection of Pneumatic Conveyed Pulverized Solids

Angelovski¹,

Penirschke²,

Jakoby³

2011

Frequenz

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This paper presents an application of a Composite Right/Left-Handed (CRLH) Transmission Line resonator for a compact mass flow detector which is able to detect inhomogeneous flows. In this concept, series capacitors and shunt inductors are used to synthesize a medium with simultaneously negative permeability and permittivity -the so called metamaterial. The helix shape of the cylindrical CRLH-TL sensor offers the possibility to detect flow inhomogeneities within the pipeline which can be used to correct the detected massflow rate. A combination of two CRLH-TL structures within the same cross-section of the pipeline can improve the angular sensitivity of the sensor.A prototype was realized and tested in a dedicated measurement setup to prove the concept.

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Section: Double Crlh-tl Sensormentioning

confidence: 99%

CRLH-TL Sensors for Flow Inhomogeneties Detection of Pneumatic Conveyed Pulverized Solids

Angelovski¹,

Penirschke²,

Jakoby³

2011

Frequenz

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“…Composite right/left-handed (CRLH) transmission lines have been also applied in permittivity sensors [4]. A different sensor concept is presented in [5], where a CRLH is employed to detect the mass flow by measuring permittivity and particle velocity, from the phase shift information of the transmitted signal.…”

Section: Introductionmentioning

confidence: 99%

“…The operation of the implemented line as a permittivity sensor is demonstrated. The designed sensor, unlike those presented in [4] and [5], allows the determination of the permittivity of the sample not by observing the phase of the transmitted signal, but the frequency at which the transmission line starts to exhibit a radiating function in the form of a leaky wave antenna.…”

Section: Introductionmentioning

confidence: 99%

Proof of concept for a permittivity detector based on the leaky wave radiation of a CRLH transmission line

Cadena

Nova

Ávila

2014

2014 IEEE 9th IberoAmerican Congress on Sensors

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A permittivity detector based on a 2D metamaterial implemented as a composite right/left-handed (CRLH) transmission line is presented. The leaky wave radiation exhibited by the CRLH lines is used as the operational principle of permittivity detection. A CRLH line consisting of interdigital electrodes as capacitive elements and short-circuited stubs as inductive elements is designed and fabricated on FR4 substrate. S 21 parameter measurements of the implemented CRLH line are performed in the presence of air and three gases: carbon dioxide (CO 2 ), nitrogen (N 2 ) and oxygen (O 2 ). Differences in S 21 measurements of the three gases with respect to air, are used as evidence of the occurrence of leaky wave radiation. Quantification of such differences allows detecting the presence of a particular gas. The S 21 measurements are compared with those of an implemented conventional transmission line (righthanded or RH transmission line), used as reference. The permittivity sensing capacity of the CRLH line is demonstrated. It is shown that the two RH lines used as access lines to the detector do not contribute to this sensing property.

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“…They are able to detect flow inhomogeneities, but they are being followed by other drawbacks like price, reliability, maintenance costs. The challenge of detecting inhomogeneous flows can either be solved by a helix shaped CRLH-TL structure [9] or by using several CRLH-TL structures assembled around the tube. The combination of two CRHL-TL structures can dramatically improve the angular sensitivity of the sensor system without increasing the sensor length [10].…”

Section: Introductionmentioning

confidence: 99%

A4.3 - Cross-Sectional Detection of Flow Inhomogeneities for Pneumatic ConveyedPulverized Soldis Using a Helix-Shaped CRLH-Mass Flow Sensor

Penirschke

Angelovski²,

Jakoby³

2011

Proceedings SENSOR 2011

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This paper presents an application of Composite Right/Left-Handed (CRLH) Transmission Line resonators for compact mass flow detectors with increased sensitivity compared to conventional microwave mass flow detectors. In this concept series capacitors and shunt inductors are used to synthesize a medium with simultaneously negative permeability and permittivity -the so called metamaterial. The simultaneous detection of the velocity and the solids/air concentration from a single measurement, ensures a true mass flow detector. The helix shape of the cylindrical CRLH-TL sensor offers the possibility to detect flow inhomogeneities within the pipeline that can be applied to increase the accuracy of the detector. The rearrangement of two CRLH-TL resonators can reduce the necesasary sensorlength of the sensor and at the same time increase the sensitivity of irregularities in homogeneous distributed flows. Prototypes of both sensor structures were realized and tested in a dedicated measurement setup to prove the concept. The application areas of this sensor are gas/solids, gas/liquid and liquid/solids flows in various industrial monitoring applications.

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Helix-shaped CRLH-mass flow detector for the cross-sectional detection of inhomogeneous distributed pneumatic conveyed pulverized solids

Cited by 7 publications

References 6 publications

CRLH-TL Sensors for Flow Inhomogeneties Detection of Pneumatic Conveyed Pulverized Solids

CRLH-TL Sensors for Flow Inhomogeneties Detection of Pneumatic Conveyed Pulverized Solids

Proof of concept for a permittivity detector based on the leaky wave radiation of a CRLH transmission line

A4.3 - Cross-Sectional Detection of Flow Inhomogeneities for Pneumatic ConveyedPulverized Soldis Using a Helix-Shaped CRLH-Mass Flow Sensor

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