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公开(公告)号：JPH11200231A
公开(公告)日：1999-07-27
申请号：JP36873697
申请日：1997-12-26
Applicant: TORAY INDUSTRIES
Inventor： TANAKA HARUMI , KATO TOMIO
IPC: D06H3/10
Abstract: PROBLEM TO BE SOLVED: To provide a yarn abnormality-detecting device capable of minimizing the abnormal loss of yarns and improving the efficiency of the production by measuring a traveling synthetic fiber yarn in a non-contact state to enable the detection of the presence or absence of the abnormality in a process for producing the yarn. SOLUTION: This device for detecting the presence or absence of the abnormality of a traveling yarn 13 is provided with a sensor which is used for sensing thermal information emitted from the yarn 13 and which comprises an IR light sensor equipped with a heat-sensitive element having the maximum sensitivity in a wavelength range of >=1 μm. This method for producing a yarn comprises traversing the yarn 13 and simultaneously winding up the yarn. Therein, the presence or absence of the abnormality of the yarn is detected on the downstream side of a traversing point in respect with the travel direction of the yarn 13, and the defect of the yarn is subsequently removed.
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公开(公告)号：JPH1038725A
公开(公告)日：1998-02-13
申请号：JP19607496
申请日：1996-07-25
Applicant: TORAY INDUSTRIES
Inventor： MAEHARA KENSAKU , TANAKA HARUMI , KATO TOMIO
Abstract: PROBLEM TO BE SOLVED: To obtain a pressure-sensitive element in which fluctuation of output is suppressed while reducing the cost of components by a structure wherein the pressure-sensitive element has substantially planar circumferential fringe part and the central part of curved face. SOLUTION: Piezoelectric elements 2, 3 are clamped, at the circumferential fringe part thereof, by means of pairs of holders 12, 13 and 14, 15. The piezoelectric element 2, 3 has substantially planar circumferential fringe part and substantially hemispherical central part. The holders 12, 13 and 14, 15 have substantially planar faces for clamping the piezoelectric elements 2, 3. The piezoelectric elements 2, 3 are juxtaposed in an intermediate case 17 such that the opposite sides thereof are oriented in same direction and the faces of same direction have an identical polarization polarity thus forming pressure detecting sections 4, 5. According to the arrangement, the piezoelectric elements 2, 3 are not deformed even if the faces of two holders 12, 13 and 14, 15 for clamping the piezoelectric elements 2, 3 are shifted at the time of manufacture and fluctuation in the output from the piezoelectric elements 2, 3 due to noise components can be suppressed.
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公开(公告)号：JPH02268230A
公开(公告)日：1990-11-01
申请号：JP8963389
申请日：1989-04-11
Applicant: TORAY INDUSTRIES
Inventor： KATO TOMIO , HASHIMOTO NOBUO , TAKEDA SHUZO
Abstract: PURPOSE:To remove noise components automatically and to make it possible to detect pressure highly accurately by applying a first pressure on one surface of each of two piezoelectric elements, applying a second pressure on the other surfaces of the elements, and obtaining the sum of the outputs of both elements. CONSTITUTION:A fluid pressure P1 from one outlet port of the element part of a flowmeter is introduced into one surface of each of piezoelectric elements 2 and 3 through a nozzle 29 and an introducing path 33. A pressure P2 from another outlet port is introduced to the other surfaces of the elements 2 and 3 through a nozzle 30 and an introducing path 36. Therefore, the pressures P1 and P2 are alternately applied to the elements 2 and 3, and the potential differences due to deformation are generated. The sum of the outputs of the elements 2 and 3 are sent into an amplifier 5, and the detected pressure fluctuation signal is outputted. Noise components due to pressure fluctuation and temperature fluctuation which are generated in the entire fluid are removed with the elements themselves. When the sum of the outputs is obtained, the sensitivity twice between than before is obtained. Thus, the highly accurate pressure detection can be performed.
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公开(公告)号：JPS63238438A
公开(公告)日：1988-10-04
申请号：JP7229887
申请日：1987-03-26
Applicant: TORAY INDUSTRIES
Inventor： KATO TOMIO
IPC: G01L1/16
Abstract: PURPOSE:To detect dynamic force and static force with high sensitivity and good response, by mounting switching FET and impedance converting FET. CONSTITUTION:Gas is introduced from an introducing port 3 and the pressure thereof is transmitted to an electrode 17. Whereupon, not only the electrode 17 but also a piezoelectric body 18 are distorted and the internal spontaneous polarization corresponding to the strains of both of them is generated and charge is induced in the electrodes 17, 19 of a piezoelectric element 5 with said polarization. The detection of voltage due to this charge is performed by such a method that a voltage pulse of a predetermined cycle is applied to the gate terminal of switching FET (Tr1) through a terminal 14 to intermittently bring switching FET (Tr1) to a continuity state and detected as the pulse like voltage intermittent between both terminals, that is, the terminals 13, 15 of an output resistor Rs. Since the detected voltage corresponds to the pressure of the gas, the pressure of the applied gas can be known from the magnitude of the detected voltage. By this method, dynamic and static pressures can be detected with high sensitivity and good response.
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5.发明专利
公开(公告)号：JP2001161810A
公开(公告)日：2001-06-19
申请号：JP35202799
申请日：1999-12-10
Applicant: TORAY INDUSTRIES
Inventor： KATO TOMIO , SUGIHARA HIROKI
Abstract: PROBLEM TO BE SOLVED: To certainly detect the disconnection and forgetting of the connection of a cable connected to both of a signal transmitting part and a signal receiving part. SOLUTION: A signal input part 1, a clamper 2 including a signal transmitting part 3 and a signal receiving part 4, a signal output part 5 and a connection state detection part 6 are provided and a resistor 1c is connected across the signal output terminal of the signal input part 1 and a DC voltage source, and a resistor 3b is connected to the ultrasonic element 3a of the signal transmitting part 3 in parallel and the signal output terminal of the signal input part 1 is connected to the connection state detection part 6.
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Patent Agency Ranking
公开(公告)号：JP2000028587A
公开(公告)日：2000-01-28
申请号：JP20048698
申请日：1998-07-15
Applicant: TORAY INDUSTRIES
Inventor： TANAKA HARUMI , KATO TOMIO
Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for evaluating a bubble detector, in which handling for fine bubbles is eliminated, the detectability for the fine bubbles in a liquid conveying pipe is evaluated precisely, dispersion of their sizes is reduced, and which provides easily high precision, to provide a highly reliable and highly sensitive bubble detector, and to enhance safety and reliability for an artificial dialyzer. SOLUTION: A detector 10 is arranged in a liquid conveying pipe 1 filled with a liquid to sandwich the pipe 1, a substance comprising known sizes of solids 4 is supplied, the solids 4 moves in the liquid to provide signals through the detector 10, when passing through the detector 10, and the presence of bubbles and their sizes are determined, based on the detected signals in the detector 10. The correlation between the signals of the detector 10, in response to the sizes of the substance comprising the solids 4 and the signals of the detector 10 in response to the sizes of the bubbles, is used for evaluation of size. The bubble detector 10 is provided with a detector for detecting known sizes of fine solids, and such the detector 10 is mounted on an artificial dialyzer.
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公开(公告)号：JPH09236539A
公开(公告)日：1997-09-09
申请号：JP35681796
申请日：1996-12-25
Applicant: TORAY INDUSTRIES
Inventor： KATO TOMIO
IPC: G01N21/01 , G01J1/04 , G01N21/35 , G01N21/3504 , G01N21/61
Abstract: PROBLEM TO BE SOLVED: To maintain high accuracy for a heat-generating position by impressing infrared rays of pulses turned ON or OFF at a gas to be measured, or an optional frequency of sine waves or the like or a periodically continuously increasing/ decreasing voltage change to a light source. SOLUTION: A gas 2 to be measured is introduced from a gas inlet 1a and discharged through a gas outlet 1b. Infrared rays are brought in from an incident window 1c of a measuring cell 1 and projected out from a penetration window 1d. The infrared rays after penetrating the gas to be measured are detected. When infrared rays of pulse lights are emitted, a heat-generating body 5d generates heat at the ON time and stops generating heat at the OFF time, thereby repeatedly shrinking and expanding. Since the heat-generating body 5d is stretched by a spring 5e, the amount of the shrinkage/expansion is absorbed naturally by tone spring 5e, so that a linearity of the heat-generating body 5d at a predetermined position is maintained. Detection accuracy and sensitivity are enhanced because an infrared ray-projecting optical system is stabilized.
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公开(公告)号：JPH0986795A
公开(公告)日：1997-03-31
申请号：JP27465695
申请日：1995-09-27
Applicant: TORAY ENG CO LTD , TORAY INDUSTRIES
Inventor： HASEGAWA KATSUMI , IMAE MASAZUMI , KATO TOMIO , TANAKA HARUMI
IPC: B65H54/28 , B65H54/70 , B65H63/024 , B65H63/06 , D01D7/00
Abstract: PROBLEM TO BE SOLVED: To provide an error detection method for traveling yarn as well as an error detection device for traveling yarn, capable of quickly detecting an error such as a yarn breakage error at a yarn manufacturing process, an error in the deposited state of a treatment solution applied to the yarn, and an error in yarn thermal treatment, and further capable of reducing the appearance of defective thread. SOLUTION: A heat sensitive sensor 9 for temperature detection is laid in a non-contact state at the position where a yarn travel route is periodically changing, downstream of the traverse support guide 7 of a traverse device for traversing traveling yarn, and a thermal signal sent from the traveling yarn periodically changing a travel route is periodically detected, thereby detecting the abnormal state of the yarn.
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公开(公告)号：JPH05164640A
公开(公告)日：1993-06-29
申请号：JP34973091
申请日：1991-12-10
Applicant: TORAY INDUSTRIES
Inventor： KATO TOMIO , YAMAMOTO MASAKAZU , ITO TORU
Abstract: PURPOSE:To ensure the highly sensitive performance of a pressure sensor by equalizing the capacities of fluid-pressure introducing paths into two film-shaped piezoelectric elements, removing the inconvenience in measurement of a flow rate when a fluid to be measures is not flowing, and equalizing the pressure propagating speeds to the upper and rear surfaces of each piezoelectric element. CONSTITUTION:In a pressure sensor 1, two piezoelectric elements 2 and 3, wherein electrode layers are provided on both surfaces of each film-shaped piezoelectric body, are arranged so that the surfaces in the same direction form the same polarization. Fluid pressure is introduced through inlet nozzles 39 and 40 on the first surface of one piezoelectric element and the second surface of the other piezoelectric element and the first surface of the other piezoelectric element and the second surface of one piezoelectric element, respectively. Means 51 and 52, which can adjust the capacities of the paths, are provided for at least one of fluid-pressure introducing paths 42, 43, 44 and 45.
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公开(公告)号：JPH02268229A
公开(公告)日：1990-11-01
申请号：JP8963289
申请日：1989-04-11
Applicant: TORAY INDUSTRIES
Inventor： KATO TOMIO , TAKEDA SHUZO , HASHIMOTO NOBUO
Abstract: PURPOSE:To remove a noise component and to make it possible to detect pressure highly accurately applying a first pressure on both surfaces of one of two piezoelectric elements, applying first and second pressures on both surfaces of the other alternately, and offsetting the outputs of both elements. CONSTITUTION:A fluid pressure P1 is introduced to both surfaces of a piezoelectric element 2 and to one surface of a piezoelectric element 3 from one outlet port of the element part of a flowmeter through a nozzle 29 and an introducing path 33. A pressure P2 from another outlet port is introduced to the other surface of the element 35 through a nozzle 30 and an introducing path 35. Therefore, the pressures P1 and P2 are alternately applied to the element 3, and the potential difference due to the deformation is generated on both surfaces. The same pressure P1 is applied on both surfaces of the element 2. The output which is obtained by subtracting the output of the element 2 from the output of the element 3 is sent into an amplifier 5. A detected pressure-fluctuation signal is outputted. A noise component is removed with the element 2 at the same time. Thus, the highly accurate pressure detection without the effect of the noise can be performed.
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