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    • 2. 发明专利
    • Antenna system for tire state detecting device
    • 轮胎状态检测装置天线系统
    • JP2013095337A
    • 2013-05-20
    • JP2011241624
    • 2011-11-02
    • Fuji Electric Co Ltd富士電機株式会社
    • MORITA AKIRA
    • B60C23/04B60C23/00H01Q9/16
    • PROBLEM TO BE SOLVED: To provide an antenna system which allows one antenna to have directivity in four tire directions.SOLUTION: One in-vehicle antenna 10 is provided on a vehicle body 6 side. The in-vehicle antenna 10 is a dipole antenna which achieves directivity in four directions by satisfying a predetermined condition. Radio communication with radio sensors 2 of four tires is satisfactorily established by only one antenna 10. The predetermined condition is specified by a relation between a total length L of the dipole antenna, and a wavelength λ of a radio wave to be used. For example, " 1.8λ ≤ L ≤ 2.0λ " is a preferable condition.
    • 要解决的问题:提供一种允许一个天线在四个轮胎方向上具有方向性的天线系统。 解决方案:一个车载天线10设置在车身6侧。 车载天线10是通过满足预定条件来实现四个方向的方向性的偶极子天线。 与四个轮胎的无线电传感器2的无线电通信仅由一个天线10令人满意地建立。预定条件由偶极天线的总长度L与要使用的无线电波的波长λ之间的关系来规定。 例如,“1.8λ≤L≤2.0λ”是优选的条件。 版权所有(C)2013,JPO&INPIT
    • 3. 发明专利
    • INTERFACE-MEASURING APPARATUS
    • JP2003114143A
    • 2003-04-18
    • JP2001310796
    • 2001-10-09
    • FUJI ELECTRIC CO LTD
    • MORITA AKIRA
    • G01F23/28B01D21/30C02F1/00
    • PROBLEM TO BE SOLVED: To prevent the transmission/reception efficiency in ultrasonic waves from decreasing, a vibration frequency from being changed, and the like by a brush 3 for wiping off deposits on a vibration surface 3a in an ultrasonic vibrator 3 for causing erroneous measurement in an interface-measuring apparatus for measuring the position in an interface that is formed at the lower portion in liquid 07 in a precipitation bath from a floating suspension object by the transmission/reception of ultrasonic waves. SOLUTION: A washing frame 5 in a cylindrical cage shape has a number of blades 54 and a brush 53 on the periphery and the bottom, respectively, of a frame that becomes the base frame, receives the pressure of water 20 from a nozzle section 11 in the blades 54 in washing, and is rotated and lifted with a guide pipe 6 as an axial pipe while surrounding the vibrator 3. In this case, the brush 32 is in contact with the vibration surface 3a for rotation, and at the same time wipes out the vibration surface 3a. When ultrasonic waves are to be received and transmitted, discharged water from the nozzle section 11 is stopped for allowing the washing frame 5 to naturally fall, the brush 32 is separated from the vibration surface 3a, and ultrasonic waves are transmitted and received without nearly being affected by the brush 32.
    • 4. 发明专利
    • GAS METER
    • JP2001004418A
    • 2001-01-12
    • JP18002699
    • 1999-06-25
    • FUJI ELECTRIC CO LTD
    • MORITA AKIRA
    • G01F1/00G01F1/66G01F3/22
    • PROBLEM TO BE SOLVED: To provide a gas meter which can obtain a proper precision and precisely detect gas leakage by restraining the change of a measured value especially in fine flow rate level (gas leakage detecting level), in a gas meter using a principle of measuring instantaneous flow rate. SOLUTION: When a measured instantaneous flow rate is at least the minimum flow rate wherein precision can be ensured (step S3, YES), result processed by a low-pass filter having a small time constant is outputted as a measured result (step S4). In the other case, i.e., when a measured instantaneous flow rate is at the minimum flow rate level, processing by a low-pass filter having a large time constant is performed (step S5). Basically, when the result is equal to or greater than a leakage detecting flow rate (step S8, YES), the result processed by the low-pass filter having a large time constant is outputted as a measured result (step S10). When it is decided that a rapid change in the flow rate is generated in practical use (step S6, YES), the result processed by the low-pass filter having a small time constant is outputted as a measured result (step S7).
    • 5. 发明专利
    • ULTRASONIC GAS METER
    • JP2001004416A
    • 2001-01-12
    • JP17551699
    • 1999-06-22
    • FUJI ELECTRIC CO LTD
    • MORITA AKIRA
    • G01F3/22G01F1/66
    • PROBLEM TO BE SOLVED: To provide an ultrasonic gas meter which can take a large propagation effective distance of ultrasonic wave by reducing the influence of a curved pipe part on the measuring precision of gaseous fluid. SOLUTION: This ultrasonic gas meter is provided with a cabinet 1 having a gas introducing inlet 15 and a gas discharging outlet 16, an L-shaped measuring pipe 3 which is accommodated in the cabinet 1, introduces gas from the gas introducing inlet 15 to a gas inflow port 35 and discharges the gas from a gas leading-out port 36 to the gas discharging outlet 16, a first and a second ultrasonic sensor 41 and 42 which are slantingly and oppositely arranged at a first linear pipe part 31 of the L-shaped measuring pipe 3, and a third ultrasonic sensor 43 which is arranged on a second linear pipe part 32 and receives a reflected wave of an ultrasonic signal outputted from the first ultrasonic sensor 41, at the second ultrasonic sensor 42 or its peripheral part. A flow rate in the L-shaped measuring pipe 3 is measured from the difference of ultrasonic propagation times between the first and the second sensors 41, 42 and between the first and the third sensors 41, 43.
    • 6. 发明专利
    • ULTRASONIC FLOWMETER
    • JP2000258213A
    • 2000-09-22
    • JP6121899
    • 1999-03-09
    • FUJI ELECTRIC CO LTD
    • MORITA AKIRA
    • G01F1/66
    • PROBLEM TO BE SOLVED: To provide an ultrasonic flowmeter capable of stably measuring the flow rate over a wide range from a low flow rate to a high flow rate. SOLUTION: The meter comprises a pair of ultrasonic oscillator 1 and transmitting means 2, time difference measuring means 3A for measuring the ultrasonic wave propagation time 2g from the upstream to the downstream after detecting an ultrasonic signal 1a propagating in a fluid 1A, and means 4 for calculating the flow rate 2k of the fluid 1A from the propagation time 2g, the time difference measuring means 3A comprises an amplifier 23, a Q-variable tuned filter 24 for eliminating a noise component from the amplified signal 2d, a received wave detector circuit 25 for detecting the arrival time 2r of the ultrasonic signal 1a from this filter output 2e, and a time difference measuring circuit 26 for measuring the propagation time 2g from the ultrasonic transmitting time 2a and the detection time 2f, and the tuned filter 24 has a low Q and high Q and switches the Q-value, based on a Q-value instruction signal 2j from the flow rate measuring means 4.
    • 7. 发明专利
    • FINGERPRINT IMAGE INPUT DEVICE
    • JP2000051182A
    • 2000-02-22
    • JP22786998
    • 1998-08-12
    • FUJI ELECTRIC CO LTD
    • MORITA AKIRA
    • A61B5/117G06T1/00
    • PROBLEM TO BE SOLVED: To provide a cost-effective and flat-shaped fingerprint image input device that features high resolution and high contrast to input various types of irregular patterns such as fingerprint, or the like. SOLUTION: This device is provided with a flat-shaped light-source 1 and a transparent parallel plate 3 in which one plane 30 of a transparent plate 31 of n1 of refractive index receives light from the light-source 1, at the other plane 40 side of this mother material (plate 31), multiple triangle prisms 4 of n2 of refractive index are embedded therein in parallel so that two faces of the triangle prisms are embedded, and boundary faces 41b, 42b... are incident and refractive planes while, boundary faces 41a, 42a... are refractive and outgoing planes, and boundary faces 41c, 42c... are flat-formed at the outside to make a detection plane. This device is also provided with a filtering plate 23 which selectively filters light from the outgoing planes 41a, 41a... and a light-receiving element 5 which receives the filtered light. The device reads fingerprint information from a finger touched on the detection planes 41c, 42c... on the transparent parallel plate 3.
    • 9. 发明专利
    • GAS GAP
    • JPH09320733A
    • 1997-12-12
    • JP13247096
    • 1996-05-28
    • FUJI ELECTRIC CO LTD
    • MIYAMOTO MASAHIROMORITA AKIRAHOSOKAWA TATSUZO
    • H01T4/12H01T4/20H01T14/00
    • PROBLEM TO BE SOLVED: To make the insulating dimension of a high voltage apparatus small by constituting a metal pair with a metal flat plate and a metal rod parallel to the metal flat plate, filling the specified gas in a gap, and specifying the shortest gap length between the metal flat plate and the metal rod and the radius of curvature of the metal rod. SOLUTION: A metal pair is constituted with a metal flat plate 1 and a metal column 2 which is a metal rod. The metal column 2 is arranged in parallel to the metal flat plate 1 through a gap 7, and the radius of curvature (r) of the metal column 2 is set to 7.5mm. The shortest gap length (d) between the metal column 2, and the metal flat plate 1 is set to 7.5mm. SF6 gas of 0.18-0.22MPa is filled in the gap 7. Since V-t characteristics becomes flat, even if abnormal voltage is higher than the operation voltage, a high voltage apparatus is protected with the gas gap, and the insulating dimension of the high voltage apparatus is made small.