Energy harvesting technologies for wireless sensors in rotating environments

Häggström, Fredrik; Gústafsson, Jónas; Delsing, Jerker

doi:10.1109/etfa.2014.7005364

Cited by 17 publications

(8 citation statements)

References 21 publications

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“…With the high requirement on low noise from the amplifiers, the power consumption of the amplification circuit becomes in the order of 1 to 10 mW [18]. This power consumption falls in the range of power generation of energy harvesters [19], [20]. This allows us envision a sensor solution that can be small enough to integrate in a bearing and that can, through energy harvesting, be powered to amplify and process the signal as well as being able to communicate the condition of the bearing.…”

Section: Discussionmentioning

confidence: 99%

A passive Barkhausen noise sensor for low-power applications

Hamfelt

Gústafsson

Deventer

et al. 2016

2016 IEEE International Instrumentation and Measurement Technology Conference Proceedings

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Abstract-This paper proposes a passive Barkhausen noise sensor design suitable for low power applications. The sensor uses a permanent magnet and the relative motion between itself and a measured specimen instead of the conventional method that uses a fixed sensor and an alternating magnetic field. Since this novel design is passive, the sensor is well suited for low power applications and could potentially be used in e.g. a condition monitoring system integrated into a rolling element bearing. Proof of concept testing has been performed showing that the proposed sensor produces similar results as conventional Barkhausen noise sensors when applied to specimens being cyclically loaded until failure in a rotating bending rig. The results imply that material fatigue detection using the Barkhausen noise can be performed with the proposed sensor at a fraction of the energy cost compared to a conventional sensor. This warrants future research into the development of the proposed sensor, its advantages, disadvantages, and functionality.

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Section: Discussionmentioning

confidence: 99%

A passive Barkhausen noise sensor for low-power applications

Hamfelt

Gústafsson

Deventer

et al. 2016

2016 IEEE International Instrumentation and Measurement Technology Conference Proceedings

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Section: Introductionmentioning

confidence: 99%

“…Variable reluctance energy harvesting (VREH) has been identified to be a suitable technique for rotational kinetic energy harvesting with low rotational speeds [ 19 , 20 , 21 , 22 , 23 ]. VREHs are a type of electromagnetic energy harvesters, which generate an AC output as the result of magnetic flux changes inside a pickup coil [ 11 , 20 ]. As opposed to many other electromagnetic transducers, VREHs do not require a relative translation between coil and magnet, which makes them suitable for applications with large diameter rotating objects, as well as low rotational speeds [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

“…VREHs are a type of electromagnetic energy harvesters, which generate an AC output as the result of magnetic flux changes inside a pickup coil [ 11 , 20 ]. As opposed to many other electromagnetic transducers, VREHs do not require a relative translation between coil and magnet, which makes them suitable for applications with large diameter rotating objects, as well as low rotational speeds [ 20 , 21 ]. However, the output voltage and frequency of VREH transducers is low at low rotational speeds [ 21 , 23 ], making the system design susceptible to interface circuit implementation.…”

Section: Introductionmentioning

confidence: 99%

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System Implementation Trade-Offs for Low-Speed Rotational Variable Reluctance Energy Harvesters

Bader

Magno

et al. 2021

Sensors

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Low-power energy harvesting has been demonstrated as a feasible alternative for the power supply of next-generation smart sensors and IoT end devices. In many cases, the output of kinetic energy harvesters is an alternating current (AC) requiring rectification in order to supply the electronic load. The rectifier design and selection can have a considerable influence on the energy harvesting system performance in terms of extracted output power and conversion losses. This paper presents a quantitative comparison of three passive rectifiers in a low-power, low-voltage electromagnetic energy harvesting sub-system, namely the full-wave bridge rectifier (FWR), the voltage doubler (VD), and the negative voltage converter rectifier (NVC). Based on a variable reluctance energy harvesting system, we investigate each of the rectifiers with respect to their performance and their effect on the overall energy extraction. We conduct experiments under the conditions of a low-speed rotational energy harvesting application with rotational speeds of 5rpm–20rpm, and verify the experiments in an end-to-end energy harvesting evaluation. Two performance metrics—power conversion efficiency (PCE) and power extraction efficiency (PEE)—are obtained from the measurements to evaluate the performance of the system implementation adopting each of the rectifiers. The results show that the FWR with PEEs of 20 % at 5 rpm to 40 % at 20 rpm has a low performance in comparison to the VD (40–60 %) and NVC (20–70 %) rectifiers. The VD-based interface circuit demonstrates the best performance under low rotational speeds, whereas the NVC outperforms the VD at higher speeds (>18 rpm). Finally, the end-to-end system evaluation is conducted with a self-powered rpm sensing system, which demonstrates an improved performance with the VD rectifier implementation reaching the system’s maximum sampling rate (40 Hz) at a rotational speed of approximately 15.5 rpm.

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“…In addition, when the batteries are exhausted, recharging or replacing them is an expensive and difficult task. Therefore, some researchers started to utilize the energy harvesting techniques [25], [26] for powering wireless sensing systems in rotating applications. Particularly, in the application of rotary tools, Chung et al [14] presented an attachable electromagnetic energy harvester to power the wireless vibration-sensing system, in which four magnets on the rotating spindle in milling processes make a coil induce currents to provide the required electrical energy output.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Wireless Power and Data Transmission Over One Pair of Coils for Sensor-Integrated Rotating Cutter

Zhu

Tao

2020

IEEE Access

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Tool condition monitoring is becoming particularly important in the cutting process. More and more researchers start to integrate the sensors into the tool holder due to its convenient use and wide applicability. However, it is difficult to transmit out the condition data and supply stable power to the sensor-integrated systems through the traditional wired way as the tool holder is under high-speed rotation in milling or drilling process. In this paper, a novel simultaneous wireless power and data transfer system over one pair of coils for sensor-integrated rotating cutter is presented, and the eddy effect caused by the metal handle that impacts the system performance is solved with ferrite shielding. To transmit out the cutting condition data wirelessly, the synchronous detection and envelope detection technology are employed. Meanwhile, the synchronous rectification technology is adopted to improve the performance of the wireless power transfer. Eventually, the experimental platform has been set up and the cutting tests have also been carried out. The results show that the designed new wireless power and data transfer system over one pair of coils is stable and practical to track and transmit out the condition data of the rotating cutter. INDEX TERMS Tool condition monitoring, rotating cutter, simultaneous wireless power and data transfer, one pair of coils, ferrite shielding.

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Energy harvesting technologies for wireless sensors in rotating environments

Cited by 17 publications

References 21 publications

A passive Barkhausen noise sensor for low-power applications

A passive Barkhausen noise sensor for low-power applications

System Implementation Trade-Offs for Low-Speed Rotational Variable Reluctance Energy Harvesters

Simultaneous Wireless Power and Data Transmission Over One Pair of Coils for Sensor-Integrated Rotating Cutter

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