Fuji Electric Co., Ltd.

Sankyo Company, Limited

Keijiro Nakamura

Toshio Sato

Akio Izumi

Nobuhiko Tsuji

Takashi Matsui

Nobuo Hashimoto

Kouji Shiino

Shozo Wada

Masanori Iike

Osamu Matsuo

Toshimi Kodaira

A diode failure detecting device in a rotary rectifier having fuses provided respectively for phases and connected in series to rectifying diodes. Light emitting diode circuits in one embodiment are connected in parallel respectively to the fuses which are arranged on the peripheral surface of a rotor. The LED's preferably emit light in different emission spectra when the respective fuses are blown out. An optical fiber sensor is provided on the side of a stator, for detecting when the LED's emit light and a photo-electric converter converts optical signals applied thereto through the optical fiber sensor into electrical signals through optical spectral discrimination separately according to the phases of the rectifier. A logic circuit determines the flow of over-current in the rectifying diodes from an output of the photo-electric converter. In a second embodiment, flags on the fuses are optically scanned to determine the presence of a blow fuse. By determining the absence of a pulse or determining pulse width, the detection of a flag is made. If the reflectivities of the flags vary, identification of a particular blown fuse can be made.

Diode failure detecting device in rotary rectifier

An automatic specimen sealing system which provides totally automated sealing of glass slides. Slides are ejected sequentially at predetermined intervals onto a conveyor at a predetermined orientation. The size of the specimens held on the slides is detected, and liquid adhesive is supplied onto the slides in an amount determined in accordance with the thus-detected specimen sizes. Glass covers are then placed over the specimens, with the size of the glass covers being also selected in accordance with the specimen size. The slides with the covers placed thereon are next fed to a binding device where the covers and slides are bound together. Finally, the slides are assembled in trays.

Automatic specimen sealing system

A system of sorting elongated pieces such as asparagus, wherein each of the elongated pieces are successively conveyed by a conveyer and detected as a still image by a sensor such as a TV camera. In processing a signal representative of the still image a stem diameter of the piece and a ratio of the spike maximum diameter of the piece to the stem diameter are obtained as sorting out factors by calculation. When the calculation values of the sorting out factors satisfy predetermined reference values, the piece is further sorted out according to size. The stem diameter is measured at a position which is spaced from the cut end of the stem by a predetermined dimension toward the spike thereof.

System for sorting elongated members

Growing community of inventors

Kanagawa, Japan

Keijiro Nakamura