The purpose of this study is to demonstrate the energy harvesting power-line magnetic noise. To best authors' knowledge, no research has yet been carried out confirm possibility. In paper, we present a simple circuit design model, and its validity by experimental results. For small self-sufficient devices in wireless sensor network, target level 1 mW. We prepare an module with air-core coil resonant capacitor. From simulated results, investigate desired conditions for mW from uniform field...

From the Malaysian harvester's perspective, determination of ripeness oil palm (FFB) is a critical factor to maximize production. A preliminary study novel fruit sensor detect maturity bunches presented. To optimize functionality sensor, frequency characteristics air coils various diameters are investigated determine their inductance and resonant characteristics. Sixteen samples from two categories, namely ripe fruitlets unripe fruitlets, tested 100 Hz up MHz frequency. The results showed...

The paper aims to study the sensor that identifies maturity of oil palm fruit bunches by using a flat-type inductive concept based on resonant frequency technique. Conventionally, human grader is used inspect ripeness fresh bunch (FFB) which can be inconsistent and inaccurate. There are various new methods proposed with intention grade FFB, but none has taken concept. In this study, resonance air coil investigated. Samples FFB tested frequencies ranging from 20 Hz 10 MHz results obtained...

Oil palm ripeness' main evaluation procedure is traditionally accomplished by human vision. However, the dependency on evaluators to grade ripeness of oil fresh fruit bunches (FFBs) traditional means could lead inaccuracy that can cause a reduction in extraction rate (OER). This paper emphasizes battery method distinguish FFB stages determining value load resistance voltage and its moisture content resolution. In addition, computer vision using color feature tested same samples compare...

Among palm oil millers, the ripeness of Fresh Fruit Bunch (FFB) is determined through visual inspection. To increase productivity many researchers have proposed with a new detection method to replace conventional one. The sensitivity such sensor plays crucial role in determining effectiveness method. In our preliminary study novel fruit detect maturity bunches proposed. design air coil based on an inductive further investigated improve its sensitivity. This paper investigates results...

This paper presents a novel approach for the design of square coil system, through considerations conventional system. simple allows us to system which contains greater number coils. From this method, we introduce new structure same-sized coils, Simple-Box-9. The constant spacing is fourth-part side length coil, and windings 2/1/1/1/1/1/1/1/2. numerical calculations experiments, it shown that Simple-Box-9 can achieve best uniformity compared with systems.

The objective of the study is a development desk-top magnetic shielding system for calibration high-sensitive magnetometers, and evaluation their ability to produce uniform field. This consists hexagonal tubes cylinder. have double-layered structure, an opening advantage in axial performance. cylinder has openings transverse A solenoid-like coil wound around From experimental results, field properties are demonstrated. Within half length system, achieved total (dc component) less than 200 nT...

The objective of this paper is to provide suitable approximations effective permeability for magnetic concentration cores. This core has a dumbbell shape so that the flux concentrated coil winding part core. It well known demagnetizing factor strongly depends on shape, which defines permeability. Although several researchers have already proposed an approximation dumbbell-shaped core, they did not take into account flange length. In paper, novel proposed. based and correction terms related...

This paper presents magnetic flux concentration methods for energy harvesting module. The purpose of this study is to harvest 1 mW with a Brooks coil 2 cm in diameter from environmental field at 60 Hz. Because the power proportional square density, we consider use and core. consists an air­core resonant capacitor. When uniform crossed coil, distribution around was changed. It found that area concentrated larger than 20 times compared field. Compared our designed core makes harvested...

There are many factors affecting oil extraction rate (OER) but a large contributor to high national OER is by processing good-quality fresh fruit bunches (FFB) at the mills. The current practice for grading palm in mills using human graders visual inspection, which can lead repeated mistakes, inconsistent evaluation results, and other related losses. This study aims develop maturity sensor that detect grade send indication user whether accept or reject bunches. focuses on battery principle...

This paper aims to study a triple flat-type air coil inductive sensor that can identify two maturity stages of oil palm fruits, ripe and unripe, based on the resonance frequency fruitlet capacitance changes. There are types structure have been tested, namely Triple I II. is series with fixed number turns (n = 200) different length, II length (l 5 mm) turns. The peak comparison between using coefficient variation cv, which defined as ratio standard deviation mean express precision...

This paper presents fruit battery evaluation as a method to distinguish between oil palm ripeness stages. The consists of two electrodes that have different ionization tendencies. can detect electrolyte changes from decreasing moisture content the ripens. proposes condition by varying depth and interval electrodes. Subsequently, probability estimating using this is evaluated regression analysis.

As the main exporter in oil palm industry, need to improve quality of has become interest among all millers Malaysia. To produce good oil, it is important for miller harvest a Fresh Fruit Bunch (FFB). Conventionally, reference used by Malaysian harvesters manual grading standard published Palm Oil Board (MPOB). A FFB consists matured fruitlets, aged between 18 21 weeks antheses (WAA). expedite harvesting process, crucial implement an automated detection system determining maturity FFB....

The design of an induction magnetometer with optimum air-core coil is presented. desired cutoff frequency the determines that size should be minimized shape a Brooks coil. An op amp to used in electronics diameter winding coil, and thus characteristics are defined. A battery-powered was fabricated demonstrated validity design. It had 18 Hz, linear transfer function 30 mV/nT, noise floor level 300 fT/√Hz range from 50 150 Hz. These results were good agreement

A simple magnetic shielding system for residual magnetization measurements of a motor to be used in satellites is studied. The consists same-sized square coils, namely three sets Simple Cubic-3 coil system. Because the can generate uniform field, we investigate uniformity site. With first-order gradient coil, geomagnetic field reduced less than 100 nT relatively large area. Inside system, step are demonstrated. An approach reduce leakage from also presented.

In this paper, a cylindrical permanent magnet linear motor (PMLM), which has high performance, was designed and developed, because the zero normal force higher thrust density. The structure of plays vital role at stage design. During design stage, several models PMLM that had different structural parameters were simulated using FEM software, model produced high-performance identified. involved include radius height magnet, rpm hpm, coil, hc ,a nd shaft radius, rs, within fixed total rtotal....

Oil palm is one of the key industries highly observed in Malaysia, due to its high demand both whether locally or internationally. The oil extraction rate (OER) production used as an element identify performance mills, estates and producers. In view this, there are specific instrument sensor needs be implemented at mills especially during reception fresh fruit bunches (FFB) transported from field for content processing. This paper aims study propose use a battery-based maturity analyse...

For the development of a magnetic field compensation system suited for open end cylindrical shell, distributions were characterized on axis shell externally impressed low-frequency AC and compensating generated by set ring coils. Based this observation, actively leakage through opening is proposed. A shield desk-top size was constructed combining an axial made 2 in wide Metglas 2705M amorphous tapes encircling outer surface body its direction, with shaking coil, then proposed built top...

This paper presented a double cylindrical magnetic shield with nonoriented silicon steel plate rings. The total weight of cylinders was about 14 kg, and its corresponding material cost less than 50 USD. A relatively low noise 2 pT/Hz/sup -1/2/ at 10 Hz 20 1 measured HTS dc-SQUID sensor inside the shield. transverse shielding factor fluxgate sensor, value 500 when ranges frequency amplitude were Hz-1 kHz 100 nT-10 /spl mu/T. dramatically improved to as high 000 by shaking enhancement. If not...