公开(公告)号：JPS55166354A

公开(公告)日：1980-12-25

申请号：JP7433279

申请日：1979-06-13

Applicant: NAT AEROSPACE LAB

Inventor： SAITOU YOSHIO ,  OOYAMA KOUICHI ,  SUGAWARA NOBORU

IPC: H04B10/11 ,  H04B10/00 ,  H04B10/114 ,  H04B10/524

Abstract: PURPOSE:To eliminate the external noise or the interference given from other channels for the signal transmission between the substances having the relative motion, by using the optical pulse signal. Thus the good signal transmission is ensured. CONSTITUTION:With application of input signals Si1, Si2 and Si3 to VF converting circuit 15, the corresponding pulse signals are delivered to light up LEDs 14a-14c. On the other hand, phototransistors 24a-24c receive the light reception amount of more than the fixed value at all times regardless of the turning of shaft 11, and each output of transistors 24a-24c is demodulated at FV converting circuit 25. Thus outputs S01, S02 and S03 which are equal to the original signal are obtained. In such way, the signal transfer can be carried out smoothly for the signals under the relative motion between shaft 11 and still axle 21.

公开(公告)号：JPS55140117A

公开(公告)日：1980-11-01

申请号：JP4744779

申请日：1979-04-18

Applicant: NAT AEROSPACE LAB

Inventor： MATSUKI MASAKATSU ,  ENDOU MASANORI ,  SAITOU YOSHIO

IPC: G01H9/00 ,  G01H11/00 ,  G01H17/00

Abstract: PURPOSE:To measure the vibration of rotating vanes in operation without contact by installing a detector for a reference point and a detector for the vane tip in order to measure the period of time from detecting the reference point to sensing the vane to be measured by a time counter. CONSTITUTION:A rotary shaft 2 is equipped with vanes 4, and a detector S for the vane tip is installed so as to be opposed to the tip of the vanes 4. A disc 5, which has a reference point alpha, is installed to the rotary shaft 2, and a detector P for the reference point is arranged so as to be opposed to the disc. Signals from the detectors S and P are counted by a time counter CNTR which is actuated by a flip- flop FF and a presetting counter PC-0, in order to measure time. Thus, measuring the period of time from detecting the reference point to sensing the vane to be measured, and comparing this with the period of time previously obtained when the vane to be measured has not been displaced, permit the vibration of the rotating vanes in operation to be detected without contact.

公开(公告)号：JPS5552948A

公开(公告)日：1980-04-17

申请号：JP12697678

申请日：1978-10-16

Applicant: NAT AEROSPACE LAB

Inventor： MATSUKI MASAKATSU ,  TAMURA ATSUHIRO ,  OOYAMA KOUICHI ,  SUGAWARA NOBORU ,  SAITOU YOSHIO

IPC: G01F1/68 ,  G01F1/692 ,  G01P5/12

Abstract: PURPOSE:To improve the refractory property and the strength by making a sheath portion of a metal core wire. CONSTITUTION:One or more metal core wire 13 having a low electric resistance is inserted into a metal tube 12 having an elasticity and a diameter smaller than 2mm. A resistive thin film sensor 17, which is prepared by evaporating the surface of a base 18 of an insulating material such as ruby of semi-spherical thin plate with a platinum thin film 19, is fixed through a sensor mounting base 15 of an insulating material such as ceramics or sapphire to the leading end of a thin and flexible sheath portion 11 acting as a holder charged with an insulating filler 14 and a lead wire. Thus, the whole structure has a simple probe, and the size of the sensor 17 can be made equal to or smaller than the outside diameter of the sheath portion 11. Moreover, this sheath portion 11 has flexibility, thus attaining the desired object.