Omron Corporation

Atsushi Osada

Atsushi Irie

Koichi Furusawa

Nobuaki Omata

Yoshiyuki Morita

Hidenobu Umeda

Yukio Ogawa

Kiyotoshi Okura

Masanobu Segawa

Naoki Fujimoto

A paper quality determining sensor and a faulty paper sorting device capable of detecting reaction forces of paper sheets themselves which vary according to paper quality using a plurality of rollers so as to detect the stiffness (rigidity) of paper sheets accurately without being affected by thicknesses of the paper sheets.

Paper quality determination sensor and faulty banknote sorting device

The object of this invention is to produce a monitor which can correctly distinguish normal from abnormal vibration using automatically selected monitoring features and algorithms. The monitor can be used with a variety of devices with different vibration characteristics. The monitor according to this invention has a sensor that detects the vibration of an object. The monitor is operated in learning mode when the object is vibrating normally. The waveform of the vibration detected by this sensor is sampled over an appropriate period and analyzed. The data for each sampling feature are subjected to statistical processing, and the data which evince slight change are extracted as monitoring features. A monitoring algorithm is automatically made for these monitoring features. The algorithm selected in learning mode are used to evaluate the vibration of an object when the monitor is in operating mode. The operator does not need to set up the algorithm, and can monitor the object with a more reliable algorithm than the conventional one selected by fixed monitoring features.

Vibration monitor and monitoring method

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Ibaraki, Japan

Atsushi Osada