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1. 发明专利

JP2003302383A Sensor and its manufacturing method 有权
标题翻译：传感器及其制造方法
公开(公告)号：JP2003302383A
公开(公告)日：2003-10-24
申请号：JP2002107459
申请日：2002-04-10
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： ISHIKAWA HIDEKI , SATO YOSHIKUNI , TOMONO KEIGO , SAKAMOTO MASASHI , ISHIDA NOBORU , OSHIMA TAKAFUMI
IPC分类号： G01N29/00 , G01N29/22 , G01N29/24 , H04R1/02 , G01N29/18
CPC分类号： G01N29/223 , G01N2291/021 , G01N2291/02809 , G01N2291/02818 , G01N2291/02881
摘要： PROBLEM TO BE SOLVED: To hardly receive an influence of a noise due to a reflection of an ultrasonic wave from a mounting part when an element such as an ultrasonic element is mounted at a measuring part in a sensor which houses the element such as the ultrasonic element or the like. SOLUTION: A detecting element body 40 houses a piezoelectric element 51 in the housing part 43 of a case 42, and is mounted in a housing part 22 of a channel forming member 20. Thus, a route length from the element 51 to a mounting position of the body 40 becomes long, the ultrasonic wave leaked from the element 51 into the body 40 is reflected at a connecting part and is hardly returned. Accordingly, the influence of the noise or the like due to the reflected wave is reduced, and hence a detecting accuracy is improved. A clearance of 1 mm or more is provided averagely on an outer periphery of the part 43 of the body 40, and accordingly a problem of the residue of a foreign matter hardly occurs. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：当诸如超声波元件的元件安装在容纳元件的传感器中的测量部分时，几乎不会受到由于来自安装部分的超声波的反射引起的噪声的影响作为超声波元件等。解决方案：检测元件主体40容纳壳体42的壳体部分43中的压电元件51，并且安装在通道形成部件20的壳体部分22中。因此，从元件51到主体40的安装位置变长，从元件51向主体40泄漏的超声波在连接部反射，难以返回。因此，由于反射波引起的噪声等的影响降低，因此提高了检测精度。在本体40的部分43的外周平均设置1mm以上的间隙，因此几乎不发生异物残留的问题。版权所有（C）2004，JPO

2. 发明专利

JP2003300249A Resin structure 审中-公开
标题翻译：树脂结构
公开(公告)号：JP2003300249A
公开(公告)日：2003-10-21
申请号：JP2002107449
申请日：2002-04-10
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： ISHIKAWA HIDEKI , SATO YOSHIKUNI , TOMONO KEIGO , MORITA TAKASHI , ISHIDA NOBORU , OSHIMA TAKAFUMI
IPC分类号： G01N29/00 , B29C65/08 , B29L22/00 , G01N29/18
CPC分类号： B29C66/8322 , B29C65/08 , B29C65/7829 , B29C66/112 , B29C66/114 , B29C66/30223 , B29C66/3242 , B29C66/54 , B29L2031/3481 , G01N2291/02809 , G01N2291/02818
摘要： PROBLEM TO BE SOLVED: To prevent the generation of trouble in the function in a housing chamber by flash formed when a resin structure is formed by joining a plurality of resin members by fusion bonding. SOLUTION: A gas sensor 10 is formed by joining the flange part 41 of a material case 42 to the support surface 22a of a flow channel forming member 20 through a joining part 41b by ultrasonic fusion bonding. A flash control wall 23 is formed so as to surround a measuring chamber 28 between the joining part 41b and the measuring chamber 28. This flash control wall 23 prevents flash generated by thermal fusion bonding from entering the measuring chamber 28. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了防止当通过熔融粘合将多个树脂构件接合而形成树脂结构时通过闪光形成的容纳室中的功能产生麻烦。解决方案：通过超声波熔接通过接合部41b将材料壳体42的凸缘部41与流路形成部件20的支撑面22a接合而形成气体传感器10。闪光控制壁23形成为围绕接合部41b和测量室28之间的测量室28.该闪光控制壁23防止热熔粘结产生的闪光进入测量室28.版权所有：（C）2004，JPO

3. 发明专利

JP2003302386A Sensor 审中-公开
标题翻译：传感器
公开(公告)号：JP2003302386A
公开(公告)日：2003-10-24
申请号：JP2002107473
申请日：2002-04-10
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： ISHIKAWA HIDEKI , SATO YOSHIKUNI , TOMONO KEIGO , MORITA TAKASHI , ISHIDA NOBORU , OSHIMA TAKAFUMI
IPC分类号： G01N29/00 , G01N29/02 , H04R17/00 , G01N29/18
CPC分类号： G01N2291/02809
摘要： PROBLEM TO BE SOLVED: To provide a sensor structure in which propagating characteristics of an oscillating wave can be improved. SOLUTION: A detecting element body 40 includes a piezoelectric element 51 as a sensor element; an element case 42 made of a resin having openings at upper and lower ends; a protective film 48 provided so as to close the opening of the lower end of the case 42; and a filler 58 filled in the case 42 so as to seal the element 51. The case 42 includes a substantially hollow cylindrical housing part 43, and a flange 41 provided at the upper part of the housing part 43. The thickness t of the wall surface of the part 43 is set smaller than that of the flange 41. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供可以提高振荡波的传播特性的传感器结构。解决方案：检测元件主体40包括作为传感器元件的压电元件51; 由在上端和下端具有开口的树脂制成的元件外壳42; 设置为闭合壳体42的下端的开口部的保护膜48; 以及填充在壳体42中以便密封元件51的填充物58.壳体42包括基本上中空的圆柱形壳体部分43和设置在壳体部分43的上部的凸缘41.壁的厚度t 部分43的表面被设定为小于凸缘41的表面。（C）2004，JPO

4. 发明专利

JP2003254951A GAS SENSOR AND ITS MANUFACTURING METHOD 审中-公开
公开(公告)号：JP2003254951A
公开(公告)日：2003-09-10
申请号：JP2002060629
申请日：2002-03-06
申请人： NGK SPARK PLUG CO
发明人： ISHIKAWA HIDEKI , SATO YOSHIKUNI , MORITA TAKASHI , TOMONO KEIGO , ISHIDA NOBORU
IPC分类号： G01N29/00 , G01N29/18
摘要： PROBLEM TO BE SOLVED: To provide an easily-manufacturable gas sensor having excellent noise resistance. SOLUTION: A passage forming member 20 of this gas sensor for detecting the concentration of gas in a passage having a prescribed volume is molded from a synthetic resin, and, in this case, a metal plate 36 is insert-molded in the bottom part of a storage part 22. A detection element body 40 is arranged in accordance with the upper opening of a measuring chamber 28, and an electronic circuit board 70 is mounted thereon. In addition, a case 80 is mounted to be fittable with the storage part 22. The case 80 is a metal plate, and both are conducted by using an erection part 83 provided on the metal plate 36 and the terminal 31d of a connector 31, and connected to an earthing line from a power source. As a result, the detection element body 40 and the electronic circuit board 70 are arranged inside an electromagnetic shield formed by the metal plate 36 and the case 80, to thereby secure the noise resistance. COPYRIGHT: (C)2003,JPO

5. 发明专利

JP2010180812A Glow plug failure diagnostic system 有权
标题翻译： GLOW PLUG故障诊断系统
公开(公告)号：JP2010180812A
公开(公告)日：2010-08-19
申请号：JP2009026095
申请日：2009-02-06
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： TOMONO KEIGO
IPC分类号： F02P19/02
CPC分类号： F02P19/027
摘要： PROBLEM TO BE SOLVED: To output a further correct diagnostic result, even when controlling ON/OFF of current-carrying by pulse width modulation control, by using a switching element incorporated with the self-protective function. SOLUTION: This glow plug failure diagnostic system includes an electric current detecting circuit (120) for detecting an electric current flowing in a glow plug (50), a signal latch circuit (140) for temporarily holding a state of an electric current signal outputted from the electric current detecting circuit (120), a voltage detecting circuit (130) for detecting voltage impressed on the glow plug (50), and a diagnostic processing circuit (110) for performing diagnostic processing on the existence of at least a failure based on a state of a voltage signal and the electric current signal by monitoring the voltage signal outputted from the voltage detecting circuit (130) and the electric current signal outputted from the signal latch circuit (140) when the current-carrying to the glow plug (50) is an ON state. Even when the electric current instantly flows with the self-protective function operated, a correct diagnosis is performed by holding this state. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：即使通过使用具有自保护功能的开关元件来控制脉冲宽度调制控制的通电控制的ON / OFF，也能输出更正确的诊断结果。解决方案：该电热塞故障诊断系统包括用于检测在电热塞（50）中流动的电流的电流检测电路（120），用于暂时保持电流状态的信号锁存电路（140）从电流检测电路（120）输出的信号，用于检测施加在电热塞（50）上的电压的电压检测电路（130），以及诊断处理电路（110），其对至少通过监视从电压检测电路（130）输出的电压信号和从信号锁存电路（140）输出的电流信号，基于电压信号的状态和电流信号的故障，插头（50）为ON状态。即使电流随着自保护功能的流动而立即流动，通过保持该状态来进行正确的诊断。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2006047278A Abnormality diagnosis method and apparatus for gas concentration measuring device 有权
标题翻译：用于气体浓度测量装置的异常诊断方法和装置
公开(公告)号：JP2006047278A
公开(公告)日：2006-02-16
申请号：JP2005104672
申请日：2005-03-31
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： TANAKA MASAYASU , IEDA NORIKAZU , TOMONO KEIGO , INOUE YOSHINORI , HIRABAYASHI TATSUKI , KITO REINA
IPC分类号： G01N27/419 , G01N27/26
摘要： PROBLEM TO BE SOLVED: To identify the details and occurrence positions of abnormality, without making a sensor element damaged, when an abnormality occurs in a gas concentration measuring device employing a gas sensor such as a whole region air-fuel ratio sensor, an NOx sensor or the like. SOLUTION: At the voltage value of a connection point connecting the sensor element 10 to a sensor element control circuit 50 becoming an abnormal voltage value being previously set, when the gas concentration measuring device 1 is in its operation state, the sensor element control circuit 50 is shut off from each connection point. Accordingly, abnormal current flowing in the sensor element 10 is blocked at an abnormality occurrence timing, thereby preventing the sensor element 10 from damaging. Then, the sensor element control circuit 50 supplies the sensor element 10 with current, whose level will not cause the sensor element 10 to damage, and detects voltage values of respective connection points. The details and occurrence locations of the abnormality in the sensor element 10 are identified, based on respective terminal voltage values detected at the connection points. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了识别异常的细节和发生位置，在不使传感器元件损坏的情况下，当使用诸如全区域空燃比传感器的气体传感器的气体浓度测量装置发生异常时， NOx传感器等。解决方案：在将传感器元件10与传感器元件控制电路50连接成为预先设定的异常电压值的连接点的电压值时，当气体浓度测量装置1处于其运行状态时，传感器元件控制电路50从每个连接点切断。因此，在异常发生时刻阻止在传感器元件10中流动的异常电流，从而防止传感器元件10的损坏。然后，传感器元件控制电路50向传感器元件10供给电流，其电平不会导致传感器元件10损坏，并检测各连接点的电压值。基于在连接点处检测到的各个终端电压值，识别传感器元件10中的异常的细节和发生位置。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2002350410A GAS CONCENTRATION SENSOR ADJUSTING METHOD 失效
公开(公告)号：JP2002350410A
公开(公告)日：2002-12-04
申请号：JP2001153977
申请日：2001-05-23
申请人： NGK SPARK PLUG CO
发明人： SATO YOSHIKUNI , ISHIKAWA HIDEKI , TOMONO KEIGO , ISHIDA NOBORU , OSHIMA TAKAFUMI
IPC分类号： G01N29/00 , G01N1/22 , G01N29/02 , G01N29/18
摘要： PROBLEM TO BE SOLVED: To provide an adjusting method of a gas concentration sensor having less number of processes adjustable in a short time. SOLUTION: This gas concentration sensor 2 is connected to a gas generation device 2, and, while passing helium as a reference gas, the amplification factor of a receiving amplifying circuit 22 is adjusted so that the amplitude of a received wave becomes a prescribed value. Then, while passing nitrogen as a zero gas, a propagation time is measured, and a prescribed theoretical value is subtracted from the propagation time, and thereby a zero point correction value is calculated, and recorded in a zero point correction part 26e of a microprocessor 26. In addition, while passing helium as a span gas, a sensitivity correction coefficient is set so that the gas concentration becomes equal to the theoretical value of the span gas, and recorded in a sensitivity correction part 26h.

8. 发明专利

JP2002005901A GAS SENSOR, GAS CONCENTRATION AND FLOW RATE MEASURING METHOD 失效
公开(公告)号：JP2002005901A
公开(公告)日：2002-01-09
申请号：JP2000186380
申请日：2000-06-21
申请人： NGK SPARK PLUG CO
发明人： TOMONO KEIGO , SATO YOSHIKUNI , ISHIKAWA HIDEKI , ISHIDA NOBORU
IPC分类号： G01F1/684 , G01N29/00 , G01N29/02 , G01N29/18
摘要： PROBLEM TO BE SOLVED: To provide a gas sensor capable of measuring the evaporated fuel concentration in purge gas and a purge gas flow rate by a single sensor, and a measuring method using the sensor. SOLUTION: Gas concentration measurement is executed as follows. A received wave transmitted by an ultrasonic element 35 and received is reshaped and integrated by an integration circuit 67, and a peak value is retained by a peak hold circuit 69. A determination value is set by a resistance voltage- dividing circuit 71 based on the peak value, and the time when the integrated value of the received wave is determined to reach the set value by a comparator 73 is defined as an arrival time. The gas concentration is detected based on the period from the transmission time to the arrival time. Gas flow measurement is executed by controlling a thermistor 48 at a fixed temperature by a flow measuring circuit 76, and by detecting a voltage applied on the thermistor 48 as a signal value showing the gas flow rate.

9. 发明专利

JP2001124745A MEASURING METHOD FOR PROPAGATION TIME OF ULTRASONIC WAVES, MEASURING METHOD FOR PRESSURE OF GAS, MEASURING METHOD FOR FLOW RATE OF GAS AND GAS SENSOR 失效
公开(公告)号：JP2001124745A
公开(公告)日：2001-05-11
申请号：JP2000186379
申请日：2000-06-21
申请人： NGK SPARK PLUG CO
发明人： SATO YOSHIKUNI , TOMONO KEIGO , ISHIKAWA HIDEKI , ISHIDA NOBORU , OSHIMA TAKAFUMI
IPC分类号： G01F1/34 , G01F1/66 , G01H5/00 , G01L11/00 , G01L11/06 , G01N29/00 , G01N29/02 , G01N29/024 , G01N29/38 , G01N29/48 , G01N29/18 , G01L11/04
摘要： PROBLEM TO BE SOLVED: To provide a measuring method, for the propagation time of ultrasonic waves, in which the precise propagation time of the ultrasonic waves can be recognized and to provide a measuring method for the pressure of a gas, a measuring method for the flow rate of the gas and a gas sensor. SOLUTION: Received waves which are transmitted by an ultrasonic element 5 so as to be received are shaped, they are integrated by an integrating circuit 67, and a peak value is held by a peak hold circuit 39. When the concentration of a gas is to be detected, a judgment value is set by a resistance voltage- dividing circuit 41, and the time in which a comparator 43 judges that the integrated value of the received waves reaches its set value is regarded as the arrival time. Then, on the basis of a period up to the arrival time from the transmitting time, the concentration of the gas is detected. When the pressure and the flow rate of the gas are to be detected, the pressure of the gas is detected on the basis of the peak value. In addition, the flow rate of the gas is calculated on the basis of the pressure of the gas.

10. 发明专利

JP2000249691A GAS CONCENTRATION SENSOR 失效
公开(公告)号：JP2000249691A
公开(公告)日：2000-09-14
申请号：JP5576699
申请日：1999-03-03
申请人： NGK SPARK PLUG CO
发明人： ISHIKAWA HIDEKI , SATO YOSHIKUNI , TOMONO KEIGO , ISHIDA NOBORU , OSHIMA TAKAFUMI
IPC分类号： G01N29/02 , G01N29/00 , G01N29/18
摘要： PROBLEM TO BE SOLVED: To provide a gas concentration sensor which can correctly measure a temperature of a gas to be measured and can highly accurately measure a gas concentration of a specific gas. SOLUTION: An oval dent part 41 long in a direction from an inflow hole 34a to an outflow hole 34b is formed to an upper side wall between the inflow hole 34a and outflow hole 34b in a measurement chamber 34. A temperature- sensing element 42 is set in the dent part 41 at the side close to the outflow hole 34b. Accordingly, the suction air in the dent part 41 can be sufficiently substituted, and moreover suction air flowing into the dent part 41 becomes easy to hit the temperature-sensing element 42. A temperature of the suction air in the measurement chamber 34 can be correctly measured. The temperature- sensing element 42 is prevented from obstructing propagation of ultrasonic waves in the measurement chamber 34, and therefore no error is generated in measuring a propagation time of ultrasonic waves. Even when the temperature of the suction air changes, a gas concentration of an evaporated fuel can be highly accurately measured.

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