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1. 发明专利

JP2009122054A Flow-measuring apparatus 有权
标题翻译：流量测量装置
公开(公告)号：JP2009122054A
公开(公告)日：2009-06-04
申请号：JP2007298775
申请日：2007-11-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAITO SUNAO , MORINO TAKESHI , OKAMOTO HIROKI , HANZAWA KEIJI , ONIKAWA HIROSHI , YASUKAWA AKIO
IPC分类号： G01F1/684 , G01F15/12
CPC分类号： G01F1/6845 , G01F5/00 , G01F15/12
摘要： PROBLEM TO BE SOLVED: To prevent a flow-measuring element of a flow measuring apparatus which is used for measuring an air flow, from damaging due to dust going into an air-intake duct. SOLUTION: A flow-measuring apparatus is equipped with an auxiliary passage 8 arranged inside a main passage through which fluid flows; and a tabular member 5, which has a pattern of a heating resistor on one face side for measuring the air flow and is disposed inside the auxiliary passage. In the tabular member, the face 5a on which the heating resistor pattern is disposed, is arranged along the flow of the fluid in the auxiliary passage. A heating resistor pattern-side fluid passage portion 8a, which is formed so that the fluid flows between the face 5a of the tabular member and a passage-forming surface 8d of the auxiliary passage, and a back-surface side fluid passage portion 8b, between a face 5b on the side opposite to the face 5b of the tabular member and a passage-forming surface 8c of the auxiliary passage, are also configured in the flow-measuring apparatus. Furthermore, a guidance portion 13 is provided on the upstream-side end of the tabular member, in order to guide the dust which collides against the end, to the back-surface side fluid passage portion 8b side. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了防止用于测量空气流量的流量测量装置的流量测量元件由于灰尘进入进气管而受到破坏。解决方案：流量测量装置具有布置在流体流过的主通道内的辅助通道8; 以及板状构件5，其在一个面侧具有用于测量空气流的加热电阻器的图案，并且设置在辅助通道内。在片状构件中，沿着辅助通道中的流体流布置布置有加热电阻器图案的面5a。形成为使得流体在平板状构件的表面5a和辅助通道的通道形成表面8d之间流动的加热电阻器图案侧流体通道部分8a和背面侧流体通道部分8b，在流量测量装置中还配置有与台状部件的表面5b相反的一侧的表面5b和辅助通道的通道形成表面8c之间。此外，为了将与端部碰撞的尘埃引导到背面侧流体通道部分8b侧，在该板状构件的上游侧端部设置有引导部13。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2009085855A Flow-measuring device and control system for internal combustion engine 审中-公开
标题翻译：用于内燃机的流量测量装置和控制系统
公开(公告)号：JP2009085855A
公开(公告)日：2009-04-23
申请号：JP2007258225
申请日：2007-10-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAITO TADAO , YASUKAWA AKIO , HANZAWA KEIJI
IPC分类号： G01F1/684
摘要： PROBLEM TO BE SOLVED: To constrain deformation of housing frame, equipped with projection for positioning and fixing a circuit board or a circuit board base, even for a wide range of temperature changes inside an engine room, and to reduce the stress influence due to a flow rate measuring element, having a pattern of heating resistor installed on the circuit board. SOLUTION: By preparing at least three or more projections 13 positioning and holding a circuit board on a housing frame 4 or a circuit board base 14 so as to constitute, excluding a flow rate measuring element 6 from a domain connecting each projection with a line, the impact arising from deformation of the housing frame and the circuit board base due to the temperature change affect the circuit board can be reduced. Thus, reduction in stress becomes possible to the flow rate measuring element prepared on the circuit board, and this leads to reduction in errors in the flow rate. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了限制具有用于定位和固定电路板或电路板基座的突起的壳体框架的变形，即使是在发动机室内的宽范围的温度变化，并且减小应力影响由于具有安装在电路板上的加热电阻的图案的流量测量元件。解决方案：通过制备至少三个或更多个突起13，其将电路板定位并保持在壳体框架4或电路板基座14上，以便从连接每个突起的区域构成流量测量元件6 一条线，由于温度变化对壳体框架和电路板基座的变形的影响对电路板的影响可以减小。因此，能够使在电路基板上准备的流量测量元件的应力减小，这导致流量误差的降低。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2008002896A Thermal flowmeter 有权
标题翻译：热流量计
公开(公告)号：JP2008002896A
公开(公告)日：2008-01-10
申请号：JP2006171594
申请日：2006-06-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUMOTO MASAHIRO , YAMADA MASAMICHI , NAKANO HIROSHI , HANZAWA KEIJI , KANAMARU TAKAHIRO
IPC分类号： G01F1/692
CPC分类号： G01F1/6845 , G01F1/692 , G01F1/6986
摘要： PROBLEM TO BE SOLVED: To reduce the coupling capacitance of wiring sections of a thermal flowmeter and improve its decrease in responsiveness. SOLUTION: A detection element 1 of the thermal flowmeter forms a diaphragm 2 on a flat substrate made of silicon, ceramics, or the like and includes on the diaphragm 2 a heating resistor 6 as a heating element to be heated to have a predetermined temperature difference with respect to the temperature of an air flow to be measured, a heating-element temperature detection resistor 5 for detecting the temperature of the heating resistor 6, temperature detection resistors 3, 4, 7, 8 on both ends of the heating resistor 6, wiring sections 18, 24, connecting terminals 31, 32, wiring sections 15, 16, connecting terminals 29, 30, wiring sections 10 to 13, and connecting terminals 25 to 28 and 33 to 36 for electrically connecting the heating resistor 6, a wiring pattern 14 between the wiring sections 13, 15, a wiring pattern 17 between the wiring sections 16, 18, a wiring pattern 23 between the wiring sections 22, 24, and a wiring layer 9 for providing electrical connection with the surface of the flat substrate. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：降低热式流量计的接线部分的耦合电容，并提高其响应性的降低。解决方案：热流量计的检测元件1在由硅，陶瓷等制成的平坦基板上形成隔膜2，在隔膜2上包括作为加热元件的加热电阻器6，加热元件1具有相对于要测量的空气流的温度的预定温度差，用于检测加热电阻器6的温度的加热元件温度检测电阻器5，加热两端的温度检测电阻器3,4,7,8 电阻器6，配线部18,24，连接端子31,32，配线部15,16，连接端子29,30，配线部10〜13，以及用于将发热电阻体6电连接的连接端子25〜28,33〜36 布线部分13,15之间的布线图案14，布线部分16,18之间的布线图形17，布线部分22,24和布线层9之间的布线图案23，用于与表面电连接的平面基板。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2007244147A Power source protective circuit for integrated circuit 有权
标题翻译：集成电路电源保护电路
公开(公告)号：JP2007244147A
公开(公告)日：2007-09-20
申请号：JP2006065654
申请日：2006-03-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUMOTO MASAHIRO , YAMADA MASAMICHI , NAKANO HIROSHI , HANZAWA KEIJI , SATO AKIRA
IPC分类号： H02H9/04 , F02D45/00 , G05F1/56
CPC分类号： H02H9/046 , H01L27/0248 , H02H11/002
摘要： PROBLEM TO BE SOLVED: To realize a power source protective circuit for an integrated circuit in which cost reduction is possible while maintaining the function same as that of a surge protective circuit or an adversely connected protective circuit. SOLUTION: In the power source protective circuit for an integrated circuit, an error amplifying circuit 2 as one part of the power source protective circuit is arranged in the inside of an integrated circuit 1 and integrated, and a transistor 11 as the other one part of the power source protective circuit for an integrated circuit is arranged as an element different from the integrated circuit 1. The integrated circuit 1 includes a sensor signal processing circuit 17 for processing a signal of a sensor 16. The transistor 11 can protect the integrated circuit 1 from a surge voltage of a battery terminal 15. A resistor 13 is arranged between an output terminal 8 of an error amplifier 6 and a base terminal of the transistor 11 and is made into adversely connected protection. Also, a resistor 12 connected between a connection point between the resistor 13 and the output terminal 8 and a ground can protect the integrated circuit 1 from an overcurrent. An activation resistor 14 is connected between a collector of the transistor 11 and a base thereof. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了实现能够降低成本的集成电路的电源保护电路，同时保持与浪涌保护电路或不良连接的保护电路相同的功能。解决方案：在集成电路的电源保护电路中，作为电源保护电路的一部分的误差放大电路2被布置在集成电路1的内部并集成，并且作为另一个的晶体管11 集成电路的电源保护电路的一部分被布置为与集成电路1不同的元件。集成电路1包括用于处理传感器16的信号的传感器信号处理电路17.晶体管11可以保护集成电路1由电池端子15的浪涌电压构成。电阻13布置在误差放大器6的输出端子8和晶体管11的基极端子之间，并被制成不利的保护。此外，连接在电阻器13和输出端子8之间的连接点与接地之间的电阻器12可以保护集成电路1免受过电流的影响。激活电阻器14连接在晶体管11的集电极和其基极之间。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2007205916A Flow measuring device 有权
标题翻译：流量测量装置
公开(公告)号：JP2007205916A
公开(公告)日：2007-08-16
申请号：JP2006025589
申请日：2006-02-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUGAYA ATSUSHI , MIKI TAKAHIRO , HANZAWA KEIJI
IPC分类号： G01F1/00 , G01F1/68 , G01F1/684 , G01F1/72
CPC分类号： G01F1/698 , G01F1/6965
摘要： PROBLEM TO BE SOLVED: To correct the pulsation error of a flow meter according to the magnitude and frequency of the pulsation under an environment of large pulsation or backflow. SOLUTION: A first signal processing system provides a first signal by performing integration processing (smoothing processing) 61 of a nonlinear output signal (voltage output) Vx of a flow detecting element and adjusting the sensitivity of the output signal by linear processing 62. A second signal processing system provides a second signal by performing linear processing 64 of the output signal (source signal) Vx of the flow detecting element, performing integration processing (smoothing processing) 65 of it, and then making it nonlinear again. The difference signal between the first signal and the second signal is amplified 69 to provide a pulsation error correction amount. The pulsation error correction amount is added or subtracted 43 from the output signal (source signal) of the flow detecting element, thereby correcting the nonlinear source signal including the pulsation error. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：在大脉动或回流的环境下，根据脉动的大小和频率来校正流量计的脉动误差。解决方案：第一信号处理系统通过执行流量检测元件的非线性输出信号（电压输出）Vx的积分处理（平滑处理）61并通过线性处理62调节输出信号的灵敏度来提供第一信号第二信号处理系统通过执行流量检测元件的输出信号（源信号）Vx的线性处理64，进行其积分处理（平滑处理）65，然后再次变为非线性，来提供第二信号。第一信号和第二信号之间的差分信号被放大69以提供脉动误差校正量。从流量检测元件的输出信号（源极信号）中增加或减去脉动误差校正量43，从而校正包括脉动误差的非线性源信号。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2006258678A Thermal flow meter 审中-公开
标题翻译：热流量计
公开(公告)号：JP2006258678A
公开(公告)日：2006-09-28
申请号：JP2005078382
申请日：2005-03-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUMOTO MASAHIRO , NAKANO HIROSHI , YAMADA MASAMICHI , HANZAWA KEIJI , WATANABE IZUMI , NAKADA KEIICHI , KANAMARU TAKAHIRO
IPC分类号： G01F1/692
CPC分类号： G01F15/006 , G01F1/6845 , G01F1/692
摘要： PROBLEM TO BE SOLVED: To provide a thermal flow meter that suppresses damage received by a sensor section even in a severe using environment, and can reduce the wiring resistance. SOLUTION: A detection element of the thermal flow meter comprises a thin section (diaphragm) on a flat substrate made of material such as silicon and ceramics having high thermal conductivity, an exothermic resistor as a heating element heated to a temperature of measured air stream and a predetermined temperature difference on the surface of the thin section, temperature detection resistors as a temperature detection means on both sides of the exothermic resistor, and a wiring section and pad constituted by an electric conductor with a melting point of 2000°C or more for pulling out a signal line from the exothermic resistor and a temperature detection resistor. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：即使在恶劣的使用环境中，也提供一种能够抑制由传感器部接收到的损坏的热流量计，能够降低配线电阻。解决方案：热流量计的检测元件包括在由诸如硅和具有高导热性的陶瓷的材料制成的平坦基板上的薄部分（隔膜），作为加热元件的放热电阻器被加热到测量的温度空气流和薄壁表面上的预定温度差，温度检测电阻器作为放热电阻器两侧的温度检测装置，以及由熔点为2000℃的导电体构成的接线部分和焊盘以上，用于从放热电阻器和温度检测电阻器中拉出信号线。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005283381A Heating resistance flow measuring apparatus 审中-公开
标题翻译：加热电阻测量装置
公开(公告)号：JP2005283381A
公开(公告)日：2005-10-13
申请号：JP2004098647
申请日：2004-03-30
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： MATSUMOTO MASAHIRO , YAMADA MASAMICHI , NAKANO HIROSHI , WATANABE IZUMI , HANZAWA KEIJI , NAKADA KEIICHI
IPC分类号： G01F1/698 , F02D41/18 , G01F1/68 , G01F1/684 , G01F1/692 , G01F1/696 , G01F1/699
CPC分类号： G01F1/6845 , F02D41/187 , G01F1/692 , G01F1/696 , G01F1/699
摘要： PROBLEM TO BE SOLVED: To provide a heating resistance flow measuring apparatus capable of using an automotive ECU power source without requiring an expensive protective circuit or regulator. SOLUTION: Although a temperature difference is caused between windward and leeward by heating of temperature detecting resistors 3, 4, 7 and 8 themselves, the temperature change depends on the heating value of the resistors 3, 4, 7 and 8. The heating value of the resistors 3, 4, 7 and 8 depends on the voltage value of the ECU power source to be applied to the resistors 3, 4, 7 and 8, and an error of sensor output is caused depending on the dispersion of voltage value of the ECU power source. It is found that suppression of the heating value of the resistors 3, 4, 7 and 8 suffices for prevention of the sensor output error by the dispersion of output voltage of the power source. Therefore, in this flow measuring apparatus, heating value suppressing means for the resistors 3, 4, 7 and 8 are adapted. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够使用汽车ECU电源而不需要昂贵的保护电路或调节器的加热电阻流量测量装置。解决方案：虽然通过加热温度检测电阻器3,4,7和8本身而在上风和下风之间产生温度差，但是温度变化取决于电阻器3,4,7和8的发热值。电阻器3,4,7和8的加热值取决于施加到电阻器3,4,7和8的ECU电源的电压值，并且根据电压的色散导致传感器输出的误差 ECU电源的值。发现抑制电阻器3,4,7和8的发热值足以通过电源的输出电压的分散来防止传感器输出误差。因此，在这种流量测量装置中，适用于电阻器3,4,7和8的发热值抑制装置。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2005037404A Thermal type airflow meter 有权
标题翻译：热式气流计
公开(公告)号：JP2005037404A
公开(公告)日：2005-02-10
申请号：JP2004298011
申请日：2004-10-12
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： HANZAWA KEIJI , MATSUMOTO MASAHIRO , IGARASHI SHINYA
IPC分类号： G01F1/696 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a thermal type airflow meter which can achieve higher accuracy in a manner alternative to laser trimming through its small-scale circuitry. SOLUTION: In the thermal type airflow meter, airflow rate is measured by a gage circuit 1 containing a heating resistance element 2. Output characteristics of the gage circuit are corrected with an arithmetic circuit 16 by using quadratic or more polynomial. The arithmetic circuit 16 uses arithmetic expression to provide zero adjustment, span adjustment and nonlinear adjustment. Correction factors defined after each adjustment are memorized. The arithmetic circuit 16 introduces at least either one of module temperature or intake-air temperature of the thermal type airflow meter as an adjusting element of output characteristics. In an IC chip of this arithmetic circuit, a temperature sensor detecting chip temperature is embedded. This detected chip temperature is used to correct both circuit temperature and air temperature. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种热式气流计，其可以通过其小规模电路替代激光微调的方式实现更高的精度。解决方案：在热式气流计中，气流速率由包含加热电阻元件2的量规电路1测量。量规电路的输出特性通过使用二次或更多项式由运算电路16校正。算术电路16使用算术表达式来提供零调整，量程调整和非线性调整。记录每次调整后定义的校正因子。算术电路16将热式气流计的模块温度或进气温度中的至少一个作为输出特性的调整元件。在该算术电路的IC芯片中嵌入了温度传感器检测芯片温度。该检测的芯片温度用于校正电路温度和空气温度。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2009243996A Thermal type flowmeter 有权
标题翻译：热式流量计
公开(公告)号：JP2009243996A
公开(公告)日：2009-10-22
申请号：JP2008089157
申请日：2008-03-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKANO HIROSHI , MATSUMOTO MASAHIRO , HANZAWA KEIJI
IPC分类号： G01F1/684
CPC分类号： G01F1/6845 , G01F1/6842 , G01F1/688 , G01F1/692 , G01F1/696 , G01F5/00
摘要： PROBLEM TO BE SOLVED: To provide a thermal type flowmeter performing high accuracy measurements by reducing attachment of waterdrops to a measuring element. SOLUTION: In the thermal type flowmeter for measuring the flow rate by a measuring element 1 with an exothermic resistor and a temperature measuring resistor shaped on the surface of a substrate, a facing wall 3 facing the surface of the measuring element 1 is arranged, cantilever plate parts 5 which protrudes from the facing wall 3 toward the measuring element 1 side are arranged; a gap 6 is provided between the tip of the cantilever plate parts 5 and the measuring element 1; and the cantilever plate parts 5 are extended from the upstream to the downstream of the measuring element 1. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过减少水滴对测量元件的附着而进行高精度测量的热式流量计。解决方案：在用于通过具有放热电阻器的测量元件1和形成在基板表面上的温度测量电阻器来测量流量的热式流量计中，面向测量元件1的表面的面对壁3是布置有从面向壁3向测量元件1侧突出的悬臂板部5; 在悬臂板部5的前端与测量元件1之间设有间隙6，并且悬臂板部件5从测量元件1的上游延伸到下游。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2008233012A Thermal flowmeter 有权
标题翻译：热流量计
公开(公告)号：JP2008233012A
公开(公告)日：2008-10-02
申请号：JP2007076726
申请日：2007-03-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKANO HIROSHI , MATSUMOTO MASAHIRO , HANZAWA KEIJI
IPC分类号： G01F1/69 , G01F1/68
CPC分类号： G01F1/6845 , G01F1/688
摘要： PROBLEM TO BE SOLVED: To provide a thermal flowmeter capable of performing power supply from a control unit and reducing the power consumption without reducing the heating temperature of a heat resistor. SOLUTION: In order to reduce the power consumption of the thermal flowmeter while the flow detection sensitivity is maintained high, the power consumption of the heat resistor 6 is required to be reduced on a certain condition. In order to maintain the flow detection sensitivity high on the precondition that width Wh of the heat resistor 6 is 100≤Wh≤400 μm, the relation of the length Lh of the heat resistor 6, the heating temperature ΔTh of the heat resistor 6, and the electric power Phmax capable of being supplied to the heat resistor 6 is required to establish expression (3) 1.4≤ΔTh×Lh/Phmax≤2.8. Therefore, the length Lh of the heat resistor 6 and the heating temperature ΔTh of the heat resistor 6 are set so that the power consumption Phmax is reduced within a range establishing the expression (3). COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够从控制单元执行电力供应并且在不降低热电阻器的加热温度的情况下降低功耗的热式流量计。解决方案：为了在流量检测灵敏度保持较高的同时降低热流量计的功耗，需要在一定条件下降低热电阻6的功耗。为了在热电阻6的宽度Wh为100≤Wh≤400μm的前提下保持流量检测灵敏度，热电阻6的长度Lh，加热电阻6的加热温度ΔTh，并且需要提供给热电阻6的电力Phmax建立表达式（3）1.4≤ΔTh×Lh /Phmax≤2.8。因此，加热电阻6的长度Lh和加热温度ΔTh被设定为在建立表达式（3）的范围内功耗消耗Phmax降低。版权所有（C）2009，JPO＆INPIT

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