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11. 发明专利

JPS57154017A DETECTING DEVICE FOR DISPLACED POSITION 失效
公开(公告)号：JPS57154017A
公开(公告)日：1982-09-22
申请号：JP3994581
申请日：1981-03-19
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , NOGUCHI MASANORI
IPC分类号： G01B11/00 , G01D5/34 , G01D5/347 , G01D5/36
摘要： PURPOSE:To improve detecting accuracy, by projecting on an optical gate array element an image shifting in accordance with a mechanical displacement being measured, and then, by operating position of the mechanical displacement by making input of pulse train signal obtained from a photocell. CONSTITUTION:In an optical gate array element 3, position of a shadow of a flat plate 2 matches position of displacement of the flat plate 2, and when the optical gate is in the shadow section of the flat plate 2, emission of pulse train signal from a photocell 5 pauses, and therefore, a time T covering the period from a pulse Ps to pause of the pulse row represents positon of displacement of the flat plate 2. In a signal processing circuit 6, a pulse train signal from the photocell 5 is put out from output side of an FF circuit 62 through a comparator 61 and a single multi circuit 63, etc. to a pulse width corresponding to the time T convering the period from the pulse Ps to the temporary pause of the pulse train signal, so that a gate circuit 65 is controlled. The period for which the circuit 65 is opened accords with the position of displacement of the flat plate 2, and it is possible to tell position of the mechanical displacement. It is possible, by doing so to improve detecting accuracy.

12. 发明专利

JPS57133318A MEASURING DEVICE OF FLOW SPEED AND FLOW RATE 失效
公开(公告)号：JPS57133318A
公开(公告)日：1982-08-18
申请号：JP1980781
申请日：1981-02-13
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： MATSUMOTO TAKAHARU , KURITA YOSHIO
IPC分类号： G01F1/32 , G01P5/01
摘要： PURPOSE:To obtain a flow speed and flow rate measuring device which is designed to be exempted from influences of external vibrations and vibrations of a loaded object by making the structure rigid and increasing heat-resisting and pressure-resisting performances and durability, by providing a flange on one end of an eddy current generating body, fixing it onto an attaching section through holding metal fittings and providing a connecting rod which passes through a middle-chamber section of the eddy current generating body. CONSTITUTION:One end of an eddy current generating body is provided with a flange 22 and fixed onto an attaching section 10 by a metallic holder 8 and a screw 9, and the other end is fixed onto the wall of a pipe by an O ring 30 and a screw 3. In a recess 21 formed on the eddy current generating body 2, an electrode section which is composed of electrodes 51 and 52 is inserted and fixed to the flange 22 of the eddy current generating body 2 in a flange 53. Further, the recess 21 is reduced in diameter in the middle to form a hollow section 23 and a connecting rod 7 is made to pass through this hollow section and joined to the bottom of the electrodes section 5, and it is supported on the same location as that of the eddy current generating body 2. And, by selecting an appropriate bending stiffness for the connecting rod 7, a flexure of the eddy current generating body 2 by load and vibration becomes same as that of the electrode section 5, and therefore, it is possible to eliminate the influences of the vibrations.

13. 发明专利

JPS571913A VORTEX FLOW METER 失效
公开(公告)号：JPS571913A
公开(公告)日：1982-01-07
申请号：JP7596280
申请日：1980-06-05
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , NOGUCHI MASANORI
IPC分类号： G01F1/32 , G01P5/01
摘要： PURPOSE:To obtain a vortex flow meter of high detecting sensitivity, having a simple structure, by employing such constitution that a light source and a light-receiving part are disposed in the recess provided at one end of a vortex generating body, and the change in the quantity of light reflected from the bottom surface of the recess is detected. CONSTITUTION:When a fluid flows through a duct 1, Karman vortexes are alternately and regularly generated from both sides of a vortex generating body 2, so that the bottom surface 51 of a recess 5 in the vortex generating body receives a lifting power alternately changing in direction. As a result, there are changes in the quantity of light which goes out from a light-feeding fiber 60 and is incident on light-receiving fibers 61 and 62 after being reflected from the bottom surface 51. Said optical signals are inputted through light-receiving elements 91 and 92 and amplifiers A1 and A2 to an amplifier A3, from which the differential output between both signals is obtained. In addition, both signals are added to each other in an amplifier A4, and the light output of a light source 8 is controlled so that said added signal becomes a constant value with respect to a reference setting signal ES. Thereby, a vortex flow meter having both a simple structure and a high detecting sensitivity can be obtained.

14. 发明专利

JPS54157662A MEASURING APPARATUS OF VELOCITY AND RATE OF FLOW 失效
公开(公告)号：JPS54157662A
公开(公告)日：1979-12-12
申请号：JP6571278
申请日：1978-06-02
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , SHIBATA NORITAKE , MATSUMOTO TAKAHARU
IPC分类号： G01P5/00 , G01F1/66 , G01F1/712 , G01P3/50 , G01P5/18
摘要： PURPOSE:To obtain the apparatus of the simple entire constitution by using ultrasonic beams in detecting the fluctuation components included in the fluid to be measured and using the piezoelectric elements provided with plural electrodes as receivers of the beams. CONSTITUTION:An ultrasonic wave transmitter 2 and a receiver 3 are opposedly disposed in a pipeline 1 in which the fluid to be measured flows, in such a manner that beams cross the flow. The receiver 2 comprises mounting a sheet of electrode 21 to a sheet of flat plate form piezoelectric element 20, from which band form ultrasonic beams are radiated. The receiver 3 comprises mounting electrodes 31, 32, 33... of a width d at an equal spacing L to a flat plate form piezoelectric element 20 and respectively alternately connecting the electrodes one after another. Output of an oscillating circuit 5 is connected to the transmitter 2. The signals from the odd number receivers and the signals from the even number receivers are inputted respectively to a phase difference demodulating circuit 6, by which the phase differences of both signals are demodulated. This enables the spacing L and width d of each electrode to be provided accurately and enables the constitution as the entire part to be simplified.

15. 发明专利

JPS54130168A SPEED DETECTOR 失效
公开(公告)号：JPS54130168A
公开(公告)日：1979-10-09
申请号：JP3751378
申请日：1978-03-31
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , SHIBATA NORITAKE
IPC分类号： G01P3/80 , G01P3/66
摘要： PURPOSE:To perform speed detection of high accuracy without subjecting to the influence of periodical noise by adjusting the phase of common mode noise contained in the noise signal obtainable from a moving object. CONSTITUTION:Light having transmitted through moving paper 1 is detected with a photoelectric transducer 41 by way of a lens 31. Thereupon, the signal x(t) from the photoelectric transducer 41 is applied to a gain phase adjusting circuit 6. In addition, the difference of the signal from here and the signal from a photoelectric transducer 42 is obtained by an arithmetic circuit 7 and the output signal z(t) thereof is applied to a self-correlator 50, where the self correlation function phizz(tau) of z(t) is obtained. With this output signal phizz, a positive peak appears at phizz + phiyy and a negative peak at phixy, phiyz respectively, thus no periodical correlations owing to common mode noise appear. As a result, tau0 may be accurately detected and the velocity V may be known from the relation of tau0 = L/V.

16. 发明专利

JPS5451876A CORRELATION VELOCITYYFLOW METER 失效
公开(公告)号：JPS5451876A
公开(公告)日：1979-04-24
申请号：JP11835377
申请日：1977-09-30
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , SHIBATA NORITAKE
IPC分类号： G01F1/712 , G01P3/80 , G01P5/18 , G01P5/22
摘要： PURPOSE:To achieve the stabilization of measurement operation and the simplification of constitution by using the phase difference demodulation signals of two detection signals. CONSTITUTION:Two sets of ultrasonic transmitters-receivers 21-31, 22-32 are disposed in the positions of different flow directions of piping 1 in which the fluid being measured flows, and are connected to a correlator 6 via phase modulator 50. Then, the ultrasonic wave signals which have been emitted to the fluid being measured from the ultrasonic transmitters 21, 22 having been driven by the signals from an oscillator 4 and have been received in the ultrasonic receives 31, 32 are demodulated of phase differences with a phase demodulator 50, and are then inputted to the correlator 6, from which the autocorrelation signals are outputted and the velocity or rate of flow of the fluid being measured is thereby measured. Hence, the measurement results free from the effects of the temperature change or inside pressure variations of the fluid being measured or the vibrations of the piping are obtained.

17. 发明专利

JPS53111763A VORTEX FLOW METER 失效
公开(公告)号：JPS53111763A
公开(公告)日：1978-09-29
申请号：JP2738277
申请日：1977-03-11
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , SHIBATA NORITAKE
IPC分类号： G01F1/32
摘要： PURPOSE:To provide a vortex flow meter, which has a wide linear relationship between a vortex generating frequency and a flow speed and which is stable and satisfactory in the generating efficiency of Karman's vortexes, with the use of a simple construction by providing a vortex generaotr of such a size range as satisfier preset conditions.

18. 发明专利

JPS52132866A FLOW VELOCITY MEASURING DEVICE 失效
公开(公告)号：JPS52132866A
公开(公告)日：1977-11-07
申请号：JP4946776
申请日：1976-04-30
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , TAKAHASHI KATSUMI
IPC分类号： G01F1/32 , G01P5/01
摘要： PURPOSE:To accomplish a highly accurate and stable flow measurement with a simplified construction over a wide range from low to high flow velocities by obtaining the flow velocity from the Karman's vortex street which is established from a pair of vortex generators arranged symmertrically with respect to the center line of a pipe.

19. 发明专利

JPS52119355A DEVICE FOR MEASURING VELOCITY AND RATE OF FLOW 失效
公开(公告)号：JPS52119355A
公开(公告)日：1977-10-06
申请号：JP3564476
申请日：1976-03-31
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： SUMI AKIRA , KURITA YOSHIO , TAKAHASHI KATSUMI , AGA TOSHIO
IPC分类号： G01F1/32 , G01P5/00 , G01P5/01
摘要： PURPOSE:To make possible the detection of the velocity or rate of flow over a wide range at high sensitivity by providing a detecting bar which is disposed on the downstream side of a vortex generating body and whose both ends are fixed.

20. 发明专利

JPS52117667A VORTEX FLOW METER FOR OPEN CHANNEL 失效
公开(公告)号：JPS52117667A
公开(公告)日：1977-10-03
申请号：JP3470976
申请日：1976-03-29
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： SUMI AKIRA , KURITA YOSHIO
IPC分类号： G01F1/32 , G01F1/52
摘要： PURPOSE:To provide a vortex flow meter for an open channel, which is simple in construction but excellent in characteristics, by equipping the probe of the flow meter with a float, which has its water contacting surface smooth to stabilize the flow in the vicinity of the probe.

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