Flexible PCB-MEMS Flow Sensor

Πετρόπουλος, Αναστάσιος; Pagonis, D. N.; Kaltsas, G.

doi:10.1016/j.proeng.2012.09.127

Cited by 36 publications

(12 citation statements)

References 12 publications

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“…The hot-film flowmeter consists of a thin-film resistive heater that dissipates heat to the surrounded fluid. The fluid flow rate is directly proportional to the sensor heat loss that can be detected by the change in the film resistance [ 109 ], or voltage change [ 110 ], or the required power to keep the heater constant at a specific temperature [ 111 , 112 ]. The calorimetric flow sensor involves a thin film heater located between a minimum of two thermal sensors.…”

Section: Pipes Flow Sensorsmentioning

confidence: 99%

A Review of the Real-Time Monitoring of Fluid-Properties in Tubular Architectures for Industrial Applications

Nour

Hussain

2020

Sensors

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The real-time monitoring of fluid properties in tubular systems, such as viscosity and flow rate, is essential for industries utilizing liquid mediums. Nowadays, most studies of the fluid characteristics are performed off-line using laboratory facilities that can provide accurate results, yet they do not match the demanded industrial pace. Off-line measurements are ineffective and time-consuming. The available real-time monitoring sensors for fluid properties are generally destructive methods that produce significant and persistent damage to the tubular systems during the installation process. Others use huge and bulky invasive instrument methods that generate considerable pressure reduction and energy loss in tubular systems. For these drawbacks, industries centered their attention on non-invasive and non-destructive testing (NDT) methodologies, which are installed on the outer tubular surface to avoid flow disturbance and desist shutting down systems for installations. Although these sensors showed excellent achievement for monitoring and inspecting pipe health conditions, the performance was not convincing for monitoring the properties of fluids. This review paper presents an overview of the real-time monitoring of fluid properties in tubular systems for industrial applications, particularly for pipe monitoring sensors, viscosity, and flow measurements. Additionally, the different available sensing mechanisms and their advantages, drawbacks, and potentials are discussed.

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Section: Pipes Flow Sensorsmentioning

confidence: 99%

A Review of the Real-Time Monitoring of Fluid-Properties in Tubular Architectures for Industrial Applications

Nour

Hussain

2020

Sensors

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“…With the development of flexible electronics, several flexible flow sensors have been reported in recent years [ 20 ]. Petropoulos A. et al developed a flexible gas flow sensor which was fabricated on a flexible PCB substrate and was able to quantify 0–10 SLPM flow rate [ 21 ]. Sturm H. et al , developed a thermoelectric mass flow-rate sensor on a 10 μm thick polyimide foil [ 22 ].…”

Section: System Designmentioning

confidence: 99%

Smart Sensing Strip Using Monolithically Integrated Flexible Flow Sensor for Noninvasively Monitoring Respiratory Flow

Jiang

Zhao

Zhu

2015

Sensors

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This paper presents a smart sensing strip for noninvasively monitoring respiratory flow in real time. The monitoring system comprises a monolithically-integrated flexible hot-film flow sensor adhered on a molded flexible silicone case, where a miniaturized conditioning circuit with a Bluetooth4.0 LE module are packaged, and a personal mobile device that wirelessly acquires respiratory data transmitted from the flow sensor, executes extraction of vital signs, and performs medical diagnosis. The system serves as a wearable device to monitor comprehensive respiratory flow while avoiding use of uncomfortable nasal cannula. The respiratory sensor is a flexible flow sensor monolithically integrating four elements of a Wheatstone bridge on single chip, including a hot-film resistor, a temperature-compensating resistor, and two balancing resistors. The monitor takes merits of small size, light weight, easy operation, and low power consumption. Experiments were conducted to verify the feasibility and effectiveness of monitoring and diagnosing respiratory diseases using the proposed system.

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“…However, they are fragile, and the technology is relatively costly. In an attempt to use the same basic operation principle, but more robust designs, thin flexible PCB carriers were used as technological basis [6,7]. The sensors considered in this paper are based completely on standard flexible PCB technology and are optimized for the use in HVAC systems [8].…”

Section: Flow Sensorsmentioning

confidence: 99%

Towards distributed enthalpy measurement in large-scale air conditioning systems

Sauter

Steiner

Glatzl

et al. 2015

2015 Annual IEEE Systems Conference (SysCon) Proceedings

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Air conditioning systems are among the major energy consumers in buildings. Energy-efficient operation of AC systems is an important step towards better energy management in building automation, but requires efficient monitoring of the energy or enthalpy flows within the AC installation, which is currently still difficult because of the lack of appropriate equipment. This paper introduces a distributed data acquisition system for large-scale AC systems based on low-cost flow sensors implemented by means of standard printed circuit board technology and interconnected via a wireless sensor network. A critical issue for the system installation is the placement of the sensors in the air ducts to obtain representative measurements of the air flow. To this end, extensive aerodynamical simulations are carried out to analyze the flow distributions in typical building blocks for air ducts, particularly with respect to turbulences. The simulation results are compared with experimental data from the literature and are shown to be reliable.

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Flexible PCB-MEMS Flow Sensor

Cited by 36 publications

References 12 publications

A Review of the Real-Time Monitoring of Fluid-Properties in Tubular Architectures for Industrial Applications

A Review of the Real-Time Monitoring of Fluid-Properties in Tubular Architectures for Industrial Applications

Smart Sensing Strip Using Monolithically Integrated Flexible Flow Sensor for Noninvasively Monitoring Respiratory Flow

Towards distributed enthalpy measurement in large-scale air conditioning systems

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