Frequency analysis method using the adaptive algorithm and application to dynamic measurement of mass and weight

Sasamoto, Y.; Umemoto, Toshitaka; Adachi, Motoyuki; Kagawa, Yoichiro

doi:10.1109/sice.2007.4420946

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Further efforts to enhance continuous measurement accuracy for high speed mass measurement have been performed [30,31]. In respect of analysis method, the algorithm adapting frequency analysis [32,33] or digital filter [34] was attempted. In this paper, the noise in load cell signal in an automatic weighing system based on a belt conveyor is analyzed, and the method to reduce the noise component in load cell sensor is investigated.…”

Section: Introductionmentioning

confidence: 99%

Noise in Load Cell Signal in an Automatic Weighing System Based on a Belt Conveyor

Choi

2017

Journal of Sensors

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Noise in load cell signal in an automatic weighing system based on a belt conveyor has been examined experimentally in time and frequency domains to enhance signal quality. The noise frequency spectrum showed nonlinearly increasing multiple resonance peaks as speed increased. The noise reduction process using noise reduction algorithm, by sharply rejecting peak noise frequency component and afterward forming optimum pulse width ratio through filter slope control using selective switching of 6 LPF stages, was used for enhanced accuracy. The effectiveness of proposed method, controlling both cutoff frequency and slope of LPF, was evaluated by feeding 50 g test mass, and this noise reduction process showed better noise filtering with enhanced accuracy than fixed cutoff frequency control method. The ratio of top to bottom pulse width showed that LPF cutoff frequency above 5 Hz had the ratio above 50% up to 80 m/min speed range.

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Section: Introductionmentioning

confidence: 99%

Noise in Load Cell Signal in an Automatic Weighing System Based on a Belt Conveyor

Choi

2017

Journal of Sensors

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“…Umemoto et al [12,13] have worked on checkweighers which have an active weigh belt that is supported on a load cell and photo-electric sensor. The weight signals from the loadcells contain vibrations caused by the conveyor belt.…”

Section: Introductionmentioning

confidence: 99%

A New Method of Mass Measurement for Checkweighers

Fukuda¹,

Yoshida²,

Kinugasa³

et al. 2010

Metrology and Measurement Systems

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A checkweigher is an automatic machine to measure the weight of in-motion products. It is usually located around the end of the production process and ensures the weight of a product within specified limits. Any products are taken out of line if their weights are out of the specified limits. It is usually equipped with an optical device. It is used to make a trigger to set the time duration to allow a product to move completely on the weigh belt for sampling the weight. In this paper, a new method of mass measurement for checkweighers is proposed which uses just signal processing without the optical device. The effectiveness of the method is shown through experiments. Also a possibility of faster estimation of weight is shown.

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