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1. 发明专利

JPH01109310A PLASTIC OPTICAL FIBER CONNECTING TUBE 失效
公开(公告)号：JPH01109310A
公开(公告)日：1989-04-26
申请号：JP26642887
申请日：1987-10-23
申请人： HITACHI LTD , HITACHI CABLE
发明人： SHIMURA MASATO , IBAMOTO MASAHIKO , SUGAYA ATSUSHI , ABE TOMIYA
IPC分类号： G02B6/24
摘要： PURPOSE:To easily and surely connect plastic optical fibers with a small connection loss by using a connector formed by putting a transparent adhesive agent into a connecting tube. CONSTITUTION:The low-viscosity adhesive agent or resin raw material is stably held in the joining tube 1 by enclosing the transparent adhesive agent 2 with films 3. The films 3 are ruptured by the insertion pressure of the fibers. The refractive index of the films 3 is equaled or approximated to the refractive index of the adhesive agent after curing to prevent the increase in scattering and absorbing even when the films remain. The cured film of the adhesive agent is effective and the loss is additionally decreased if the raw material resin of the core is used for the adhesive agent. The smooth insertion is assured if a discharge hole for the excess resin is provided near the joint part at the time of insertion. The intrusion of air bubbles is effectively prevented by finely drawing a part of the joint tube toward the center. The use of a heat-shrinkable tube is a good alternative. The adhesion by using the adhesive agent of a curing type by mixing is successively executed by partitioning the components by a film and rupturing the partition by insertion of the fibers.

2. 发明专利

JPS63291003A REGULAR OPTICAL FIBER 失效
公开(公告)号：JPS63291003A
公开(公告)日：1988-11-28
申请号：JP12586587
申请日：1987-05-25
申请人： HITACHI LTD , HITACHI CABLE
发明人： IBAMOTO MASAHIKO , SUGAYA ATSUSHI , SHIMURA MASATO , ENDO AKIRA , ABE TOMIYA
IPC分类号： G02B6/36 , G02B6/00
摘要： PURPOSE:To obtain a low-loss fiber which can be easily laid without on-site working by using a core formed by previously curing a crosslinkable resin to a required shape. CONSTITUTION:Formation of a connector 3 at the end of the fiber 1 is executed by putting a metallic mold around a fiber skin and molding a connector ferrule 7 and a knob part 8 by the mold. The crosslinkable resin is then packed in the tube of a clad 6 molded to the shape of a prescribed route in the middle part and is cured, by which the core 4 is formed and the optical fiber 1 is produced. The part beyond the knob part 8 is ground to a prescribed length lwhen both ends are cut slightly longer and are inserted into an end face working machine. Only the core 4 is ground to form an end globe 10 at this time. A liquid monomer is thinly coated on such end to obtain a smooth surface by utilizing the surface tension thereof and the coating is cured in this state, then the end globe 10 which substantially forbids scattering is obtd. The light transmission loss over the entire part is thereby decreased and the need for an assembly stage is eliminated.

3. 发明专利

JPS6425107A OPTICAL BRANCHING/COUPLING DEVICE MADE OF PLASTIC 失效
公开(公告)号：JPS6425107A
公开(公告)日：1989-01-27
申请号：JP18101387
申请日：1987-07-22
申请人： HITACHI LTD , HITACHI CABLE
发明人： SUGAYA ATSUSHI , IBAMOTO MASAHIKO , SHIMURA MASATO , ABE TOMIYA
IPC分类号： G02B6/26 , G02B6/28
摘要： PURPOSE:To easily produce a high-performance coupling/branching device by sealing a specific resin into a prescribed resin tube and inserting plastic optical fibers into both ends of the tube. CONSTITUTION:Metallic molds 2, 3, the central pars of which are constricted in the thickness direction and both ends of which have circular holes respectively on the upper and lower sides, are prepd. The tube 1 made of, for example, the heat shrinkable resin which is lower in refractive index than the cores of the plastic optical fibers and is transparent, is inserted between the molds 2 and 3 and is heated under pressurization to produce the resin tube 4. For example, a thermosetting resin 8 having the same refractive index as the refractive index of the above-mentioned cores is then put into the tube 4 and the fibers 5 are inserted into both ends of the tube 4. The resin 8 is cured and the tube 4 is shrunk by a heat source 9. The branching/coupling device with 2X2-, 1X2-bends, etc., is thus produced.

4. 发明专利

JP2010010767A Frequency output device, flowmeter, and flow rate measurement apparatus 有权
标题翻译：频率输出装置，流量计和流速测量装置
公开(公告)号：JP2010010767A
公开(公告)日：2010-01-14
申请号：JP2008164545
申请日：2008-06-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUGAYA ATSUSHI , ANDO AKIRA
IPC分类号： H03K19/003 , G01F1/00 , G01F1/696 , H03K17/16 , H03K19/0175 , H03K19/018
摘要： PROBLEM TO BE SOLVED: To provide a frequency output device protecting a frequency output terminal and sufficiently securing a band of a signal waveform. SOLUTION: An output terminal of a frequency output device 2 to output a frequency signal includes a varistor element Zs1. Thus, when voltage exceeding varistor voltage, for example, is applied to the output terminal, an extra voltage over the varistor voltage is caused to flow to a grounding side to prevent high surge voltage from being input to the frequency output device 2, and the frequency output device 2 is protected. Also, an amount of electric discharge during the electric discharge is reduced to smoothen a change in voltage, peak current when voltage falls is lowered to reduce influences of electromagnetic inductive noise, such as radio noise, and a necessary band of a frequency signal is secured. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供保护频率输出端子并充分确保信号波形频带的频率输出装置。解决方案：输出频率信号的频率输出装置2的输出端子包括变阻器元件Zs1。因此，例如当超过压敏电阻电压的电压被施加到输出端子时，使压敏电压之上的额外电压流到接地侧，以防止高浪涌电压被输入到频率输出装置2，并且频率输出装置2被保护。此外，放电期间的放电量减少以平滑电压变化，当电压下降时的峰值电流降低以减少诸如无线电噪声的电磁感应噪声的影响，并且确保频率信号的必要频带。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2005147158A Combustion control system of internal combustion engine using heat element type air flow meter 审中-公开
标题翻译：使用热元件类型空气流量计的内燃机的燃烧控制系统
公开(公告)号：JP2005147158A
公开(公告)日：2005-06-09
申请号：JP2004378579
申请日：2004-12-28
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： MAKIE YASUO , SUGAYA ATSUSHI , OTA KENJI , IGARASHI SHINYA
IPC分类号： G01F1/72 , F02D41/18 , F02D45/00 , G01F1/696
摘要： PROBLEM TO BE SOLVED: To reduce influence of a reverse flow existing under a pulse possessed by a heat element type air flow meter and to enhance reliability of an output signal of the heat element type air flow meter over the whole area. SOLUTION: After the output signal of the heat element type air flow meter is converted to a flow rate value, error at a plus side by the reverse flow is reduced by interposing a delay filter corresponding to the circumstance. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：减少存在于热元件式空气流量计所具有的脉冲下的逆流的影响，并提高整个区域上的热元件式空气流量计的输出信号的可靠性。解决方案：在将热元件型空气流量计的输出信号转换为流量值之后，通过插入与该情况对应的延迟滤波器，可以减少反向流的正侧的误差。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2003172195A AIR FLOW RATE MEASURING DEVICE 审中-公开
公开(公告)号：JP2003172195A
公开(公告)日：2003-06-20
申请号：JP2001370783
申请日：2001-12-05
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： IGARASHI SHINYA , SUGAYA ATSUSHI , MINAMITANI RINTARO , NAKADA KEIICHI , WATANABE IZUMI
IPC分类号： G01F1/68 , F02D35/00 , F02D41/04 , F02D45/00 , G01F1/696 , G01F1/698
摘要： PROBLEM TO BE SOLVED: To provide an air flow rate measuring device with improved measuring accuracy by reducing influence of deposits to a heating resistor or the like caused during engine stoppage. SOLUTION: An air flow rate sucked into an internal combustion engine is detected by using the heating resistor 1. A power source control circuit 4 maintains a temperature of the heating resistor 1 at a temperature the same as that during driving of the internal combustion engine or more until temperatures of the internal combustion engine and devices attached to its intake system become a generating temperature of volatile gas such as oil vapor or less after stopping the internal combustion engine. The power source control circuit 4 detects an air temperature by a temperature sensitive resistor 2 detecting a temperature of air sucked in the internal combustion engine, and it maintains the temperature of the heating resistor at the temperature the same as that during driving of the internal combustion engine on the basis of the air temperature even after stopping the internal combustion engine. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2002168670A THERMAL AIR FLOWMETER 失效
公开(公告)号：JP2002168670A
公开(公告)日：2002-06-14
申请号：JP2000367743
申请日：2000-11-29
申请人： HITACHI LTD
发明人： SUGAYA ATSUSHI , YAMADA MASAMICHI
IPC分类号： G01F1/698 , G01F1/692 , G01F1/696
摘要： PROBLEM TO BE SOLVED: To improve accuracy by regulating the sensitivity of an overall sensor, without complicating a circuit or a regulation, when units having different flow rate measuring ranges, in response to various applications are provided in a thermal air flowmeter for measuring a suction air amount of an internal combustion engine for an automobile or the like. SOLUTION: The thermal air flowmeter comprises a means for constant- temperature drive of a heating resistor by a heating resistor 211a, and temperature-compensating resistors 211b, 211c; a means for detecting a flow rate according to the temperature difference of a temperature detecting resistor, by disposing temperature detecting resistors 211d to 211g at both sides of the heating resistor; a means for transmitting a signal, in response to a heating power of the heating resistor to the temperature difference output of the detecting resistor; a means inputting the signal, in response to the flow rate of the temperature difference to digitize the signal; and a means for executing a correction and a adjustment by digitally calculating.

8. 发明专利

JP2000161122A COMBUSTION CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE BY USE OF HEATING RESISTOR TYPE AIR FLOWMETER 失效
公开(公告)号：JP2000161122A
公开(公告)日：2000-06-13
申请号：JP34135298
申请日：1998-12-01
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： MAKIE YASUO , SUGAYA ATSUSHI , OTA KENJI , IGARASHI SHINYA
IPC分类号： G01F1/68 , F02D45/00 , G01F1/696
摘要： PROBLEM TO BE SOLVED: To reduce the measurement error of air flow rate by variably setting the delay quantity of a delay filter, when smoothing the output signal of a heating resistor type air flowmeter through the delay filter and converting it into intake air flow rate, according to the detection value of the air flowmeter. SOLUTION: In a combustion control by reading the output signal of an air flowmeter 2 that is a heating resistor type air flowmeter to a combustion control unit 1, the output signal of the air flowmeter 2 is numerically converted by an A/D converter and then converted into instantaneous air flow rate. The output signal of the air flowmeter 2 is smoothened through a delay filter, whereby the intake air quantity is determined. At this time, the delay quantity of the delay filter is retrieved from a map according to the instantaneous air flowmeter output to vary the filter delay quantity. According to this, the influence of the backflow present under pulsation of the air flowmeter 2 is reduced to improve the reliability of the measured value.

9. 发明专利

JPH11271126A AIR FLOW RATE-MEASURING APPARATUS OF HEATING RESISTOR TYPE 失效
公开(公告)号：JPH11271126A
公开(公告)日：1999-10-05
申请号：JP7911598
申请日：1998-03-26
申请人： HITACHI LTD
发明人： OTA KENJI , SUGAYA ATSUSHI
IPC分类号： G01P5/12 , G01F1/68
摘要： PROBLEM TO BE SOLVED: To provide an air flow rate-measuring apparatus of a heating resistor type which can output a singular point and inform an apparatus abnormality, etc., outside in a system carrying out digital trimming and outputting after modulating a pulse width by software. SOLUTION: A signal of a sucked air flow rate of an internal combustion engine detected by an air flow rate sensor 100 is converted digitally into an air flow rate signal by a numeric value operation means 300 and an error of the flow rate is digitally corrected. An analog output means 400 is constituted of a timer output port 410 which outputs an analog signal of output data of the numeric value operation means 300 according to a pulse width modulation system by a timer function by software and an I/O port 420 which outputs an analog signal of a level preliminarily set on the basis of the output data of the numeric value operation means 300, and therefore the analog output means outputs after converting the output data of numeric value operation means 300 to analog data.

10. 发明专利

JPH0775262A CONTROL OF VEHICLE CHARGING GENERATOR AND CONTROL APPARATUS 失效
公开(公告)号：JPH0775262A
公开(公告)日：1995-03-17
申请号：JP22153193
申请日：1993-09-07
申请人： HITACHI LTD
发明人： MARUMOTO KATSUJI , SUGAYA ATSUSHI , MASUNO KEIICHI , MAEDA YUJI , MORINAGA SHIGEKI
IPC分类号： H02J7/24 , H02P9/04 , H02P9/14
摘要： PURPOSE:To obtain excellent control accuracy by independently operating a voltage control circuit and a current control circuit. CONSTITUTION:A switch circuit 613 switches output signals ALPHV, ALPHI of a voltage control circuit (AVR) 610 and a current control circuit (ACR) 612 to an output signal CH2 of an AVR, ACR switching decision circuit 617. Switching decision is performed with output signals of a voltage setting detection circuit 618 and a current limiter value detection circuit 614. A field current If of a field coil 102 is detected by a shunt resistor R5. When the detected current exceeds the predetermined current limiter value, the current limiter value detection circuit 614 outputs a signal. The voltage setting detection circuit 618 outputs a signal depending on whether a battery voltage Vs has exceeded the predetermined voltage setting value or not. As explained, AVR 610 and ACR612 are switchingly controlled to operate independently even when these are connected in parallel.

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