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    • 3. 发明申请
    • EXHAUST GAS SENSOR HEATER DEGRADATION DIAGNOSIS DEVICE
    • 排气传感器加热器降解诊断装置
    • US20100269805A1
    • 2010-10-28
    • US12766040
    • 2010-04-23
    • Hiroyuki FUKUDAMasahiko YamaguchiTetsuji Mitsuda
    • Hiroyuki FUKUDAMasahiko YamaguchiTetsuji Mitsuda
    • F02D41/00
    • F02D41/1494F02D41/1454F02D41/222F02D2200/503Y02T10/40
    • A switching element is connected between a heater of an oxygen sensor and a ground in series. A voltage sensing resistor is connected in parallel with the switching element and in series with the heater. When the switching element is in a de-energization state, if the heater degrades and a resistance of the heater changes, a heater terminal voltage (potential at middle point between heater and voltage sensing resistor) changes correspondingly. Therefore, when the switching element is in the de-energization state, a heater terminal voltage determination parameter changing in accordance with the heater terminal voltage is sensed, and a degradation determination value corresponding to a battery voltage and temperature of the heater is calculated from a map. The heater terminal voltage determination parameter is compared with the degradation determination value to determine whether the heater has degraded.
    • 开关元件连接在氧传感器的加热器和串联的地面之间。 电压感测电阻器与开关元件并联并与加热器串联。 当开关元件处于断电状态时,如果加热器劣化并且加热器的电阻变化,则加热器端子电压(加热器和电压感测电阻器之间的中间点的电位)相应地改变。 因此,当开关元件处于断电状态时,检测到根据加热器端子电压而变化的加热器端子电压确定参数,并且根据加热器端子电压的电池电压和温度的劣化判定值从 地图。 将加热器端子电压确定参数与劣化判定值进行比较,以确定加热器是否已经劣化。
    • 4. 发明授权
    • Abnormality diagnosis apparatus for secondary air supply system of engine
    • 发动机二次供气系统异常诊断装置
    • US07797924B2
    • 2010-09-21
    • US11261588
    • 2005-10-31
    • Keiji WakaharaMasahiko YamaguchiSatoshi Kodo
    • Keiji WakaharaMasahiko YamaguchiSatoshi Kodo
    • F01N3/00
    • F01N11/00F01N3/22F01N2550/14F01N2560/07F01N2900/0422Y02T10/47
    • An abnormality diagnosis apparatus is used for a secondary air supply system for an internal combustion engine. The system includes an air pump for supplying secondary air into an upstream of a catalyst in an exhaust gas passage of the internal combustion engine. A secondary air detecting means detects secondary air information. An abnormality diagnosis means performs an abnormality diagnosis of the secondary air supply system in accordance with the secondary air information detected using the secondary air detecting means. A temperature information determining means performs at least one of detection and estimation of air pump temperature information. A condition setting means performs at least one of setting and compensating a condition for evaluating normality and abnormality of the secondary air supply system in accordance with the air pump temperature information.
    • 异常诊断装置用于内燃机的二次空气供给系统。 该系统包括用于将二次空气供给到内燃机的排气通道中的催化剂上游的空气泵。 二次空气检测装置检测二次空气信息。 异常诊断装置根据使用二次空气检测装置检测到的二次空气信息进行二次空气供给系统的异常诊断。 温度信息确定装置执行气泵温度信息的检测和估计中的至少一个。 条件设定装置根据气泵温度信息进行设定和补偿用于评价二次空气供给系统的正常和异常的条件中的至少一个。
    • 6. 发明授权
    • Fingerprint identification device and method of using same
    • 指纹识别装置及其使用方法
    • US5995641A
    • 1999-11-30
    • US816406
    • 1997-03-05
    • Masahiko Yamaguchi
    • Masahiko Yamaguchi
    • G06K9/00G06K9/62
    • G06K9/6255G06K9/00067G06K9/00087
    • A fingerprint identification device includes a fingerprint image pickup unit which receives reflected light from a light source to take a picture, and an in-block average luminance calculation unit which divides a fingerprint judging area into a plurality of blocks and calculates average luminance within the blocks according to a multivalued image signal from the fingerprint image pickup unit. A luminance deviation calculation and arrangement unit determines deviation between the in-block average luminance from the in-block average luminance calculation unit and the luminance of each picture element in the judging area to determine the number of picture elements corresponding to the deviation. A fingerprinting judging unit judges that fingerprinting has been made for the fingerprint image pickup unit when the number of picture elements within a prescribed range with the deviation near zero does not exceed a threshold for the number of picture elements corresponding to the deviation from the luminance deviation calculation and arrangement unit, and a fingerprint identification unite identifies the fingerprint based on the multivalued image signal from the fingerprint image pickup unit when the fingerprinting judging unit has judge the fingerprinting state.
    • PCT No.PCT / JP96 / 02377 Sec。 371日期1997年3月5日 102(e)1997年3月5日PCT 1996年8月26日提交PCT指纹识别装置包括:指示图像拾取单元,其接收来自光源的反射光以拍摄图像;以及块内平均亮度计算单元, 将指纹判别区域分割为多个块,并根据来自指纹图像拾取单元的多值图像信号计算块内的平均亮度。 亮度偏差计算和排列单元确定来自块内平均亮度计算单元的块内平均亮度与判断区域中每个像素的亮度之间的偏差,以确定与该偏差相对应的像素数。 当指纹图像拾取单元在偏离接近零的规定范围内的像素数不超过对应于与亮度偏差的偏差的像素数量的阈值时,指纹识别判断单元判断为指纹图像拾取单元进行了指纹识别 计算和排列单元,并且当指纹识别判断单元判断指纹状态时,指纹识别单元基于来自指纹图像拾取单元的多值图像信号识别指纹。
    • 10. 发明授权
    • Degradation determination apparatus and degradation determination system for oxygen concentration sensor
    • 氧浓度传感器的降解测定装置和劣化测定系统
    • US07885757B2
    • 2011-02-08
    • US12416296
    • 2009-04-01
    • Masahiko Yamaguchi
    • Masahiko Yamaguchi
    • G06F17/10
    • F02D41/1495F02D41/1408F02D41/1456F02D41/1458
    • There is provided a dither control means that performs a dither control, which compulsively changes an air-fuel ratio alternately to rich side and to lean side by increasing and decreasing fuel injection quantity of an injector (fuel injection valve) in a stepped manner. A predicted value (ideal A/F value ID), which indicates an ideal change of a detection value of an A/F sensor (oxygen concentration sensor) in a case where the A/F sensor is not degraded, is set as a standard value. Then, an integral of a difference between the detection value of the A/F sensor, which changes in accordance with the dither control, and the standard value is calculated. If a calculated value of the integral is larger than a predetermined value, it is determined that the A/F sensor is degraded.
    • 提供了一种抖动控制装置,其执行抖动控制,其通过以阶梯式方式增加和减少喷射器(燃料喷射阀)的燃料喷射量来强制性地将空燃比交替地改变为富侧和偏侧。 在A / F传感器不劣化的情况下,表示A / F传感器(氧浓度传感器)的检测值的理想变化的预测值(理想A / F值ID)被设定为标准 值。 然后,计算根据抖动控制而变化的A / F传感器的检测值与标准值之间的差的积分。 如果积分的计算值大于预定值,则确定A / F传感器劣化。