Variable gain amplifier circuit
    101.
    发明授权
    Variable gain amplifier circuit 失效
    可变增益放大电路

    公开(公告)号:US06175278B1

    公开(公告)日:2001-01-16

    申请号:US09318751

    申请日:1999-05-26

    申请人: Jun Hasegawa

    发明人: Jun Hasegawa

    IPC分类号: H03G330

    CPC分类号: H03G3/001 H03G1/0088

    摘要: A variable gain amplifier circuit has: a voltage-current conversion unit for converting an input voltage into a current and outputting the current; a current amplifier for amplifying the current at a set variable gain; a converter for converting the amplified current into an output voltage; and an operating point setting unit for setting an operating point so that the output voltage converges into a predetermined range during a period while a reference voltage is input.

    摘要翻译: 可变增益放大器电路具有:电压电流转换单元,用于将输入电压转换为电流并输出电流; 电流放大器,用于以设定的可变增益放大电流; 用于将放大电流转换成输出电压的转换器; 以及工作点设定单元,用于设定工作点,使得在输入基准电压的期间,输出电压收敛到预定范围。

    Heater control having capability of restoring normal heater power supply
after detection of abnormality
    102.
    发明授权
    Heater control having capability of restoring normal heater power supply after detection of abnormality 失效
    加热器控制在异常检测后具有恢复正常加热器电源的能力

    公开(公告)号:US6094975A

    公开(公告)日:2000-08-01

    申请号:US055782

    申请日:1998-04-07

    摘要: In a system using a gas concentration sensor such as an A/F sensor having a heater, a microcomputer detects an abnormality in a heater power supply control. After the detection of abnormality, the computer reduces the electric power to the heater to a minimum and determines whether the heater has restored its normal operation. The power supply to the heater is stopped and returned to the normal power supply control when it is determined that the detected abnormality continues and discontinues during the reduced power supply period, respectively.

    摘要翻译: 在使用诸如具有加热器的A / F传感器之类的气体浓度传感器的系统中,微型计算机检测加热器电源控制中的异常。 在检测到异常之后,计算机将加热器的电力降至最低,并确定加热器是否恢复正常运行。 当确定检测到的异常继续并且在减小的供电周期期间中断时,加热器的电源被停止并返回到正常的电源控制。

    Apparatus and method for controlling oxygen sensor heating
    103.
    发明授权
    Apparatus and method for controlling oxygen sensor heating 有权
    用于控制氧传感器加热的装置和方法

    公开(公告)号:US5974857A

    公开(公告)日:1999-11-02

    申请号:US172662

    申请日:1998-10-15

    IPC分类号: F02D41/14 G01N27/406

    摘要: A sensing element of an oxygen sensor is controlled to keep a target impedance for maintaining activation temperature of the oxygen sensor. As the sensing element deteriorates, its internal impedance increases and power supply to a heater for heating the sensing element increases. The oxygen sensor temperature rises excessively above an activation temperature. To restrict excessive temperature rise, the target impedance is altered when the supply power to the heater exceeds a predetermined reference. The target impedance may be increased with increase in the power supply to the heater. Alternatively, the heater supply power is limited to a predetermined maximum for restricting excessive temperature rise.

    摘要翻译: 控制氧传感器的感测元件以保持目标阻抗以保持氧传感器的激活温度。 当传感元件劣化时,其内部阻抗增加,并且用于加热感应元件的加热器的电力供应增加。 氧传感器温度过高上升到活化温度以上。 为了限制过度的温度上升,当加热器的供电超过预定的参考值时,目标阻抗被改变。 目标阻抗可以随着对加热器的电力供应的增加而增加。 或者,加热器供给功率被限制在预定的最大值以限制过度的温度上升。

    Exhaust gas detoxificaton for internal combustion engine
    104.
    发明授权
    Exhaust gas detoxificaton for internal combustion engine 失效
    内燃机废气排毒

    公开(公告)号:US5802861A

    公开(公告)日:1998-09-08

    申请号:US689496

    申请日:1996-08-07

    CPC分类号: B60H1/3208

    摘要: An exhaust gas detoxifying system includes a catalytic converter in the exhaust system of an engine to detoxify exhaust gas. An air conditioner includes a compressor which is driven by the engine, and it performs air conditioning of the vehicle interior based on a refrigeration cycle. The operation of the air conditioner compressor is restricted depending on the degree of necessity of air conditioning, which is calculated from the difference between a vehicle interior temperature and a target temperature, if the catalytic converter exhaust gas detoxification performance is expected to deteriorate during accelerating or heavy-load operations of the engine.

    摘要翻译: 排气解毒系统包括在排气系统中的催化转化器,用于排气。 空调器包括由发动机驱动的压缩机,并且其基于制冷循环执行车辆内部的空调。 如果催化转化器废气排毒性能预期在加速期间劣化,则空调压缩机的操作根据由车辆内部温度和目标温度之间的差异计算的空调需要程度来限制,或者 发动机的重载操作。

    Air-fuel ratio control apparatus for internal combustion engines
    105.
    发明授权
    Air-fuel ratio control apparatus for internal combustion engines 失效
    用于内燃机的空燃比控制装置

    公开(公告)号:US5771688A

    公开(公告)日:1998-06-30

    申请号:US694176

    申请日:1996-08-08

    CPC分类号: F02D41/1441 F02D41/1456

    摘要: On an exhaust pipe of an internal combustion engine, an A/F sensor is disposed at an upstream side of a three-way catalyst and a downstream side O.sub.2 sensor is disposed on a downstream side thereof. A CPU determines according to an exhaust gas temperature whether the operational state of the engine is in a high load. In an early stage of the engine operation of high load, CPU sets a "rich" side target air-fuel ratio within a range that enables the downstream side O.sub.2 sensor to make linear detection of air-fuel ratio and executes feedback control of air-fuel ratio by using the set target air-fuel ratio. Also, when the level of the load has increased, CPU sets a "rich" side target air-fuel ratio according to the exhaust gas temperature and executes feedback control of air-fuel ratio by using the set target air-fuel ratio. Further, when the "rich" width deviates from a range that enables the A/F sensor to make its detection, CPU performs open-loop control with respect to the increment in fuel.

    摘要翻译: 在内燃机的排气管上,A / F传感器设置在三通催化剂的上游侧,下游侧的O2传感器设置在其下游侧。 CPU根据排气温度确定发动机的运转状态是否处于高负荷状态。 在高负载发动机运行的早期阶段,CPU将“空气”侧目标空燃比设定在使下游侧O2传感器能够进行空燃比线性检测的范围内, 通过使用设定的目标空燃比来确定燃料比。 此外,当负载水平增加时,CPU根据排气温度设定“丰富”的侧目标空燃比,并且通过使用设定的目标空燃比来执行空燃比的反馈控制。 此外,当“丰富”宽度偏离使得A / F传感器能够进行检测的范围时,CPU对于燃料增量执行开环控制。

    Oxygen concentration detecting apparatus
    106.
    发明授权
    Oxygen concentration detecting apparatus 失效
    氧浓度检测装置

    公开(公告)号:US5547552A

    公开(公告)日:1996-08-20

    申请号:US480239

    申请日:1995-06-07

    摘要: To shorten the time during which oxygen concentration cannot be detected, the temperature of an oxygen concentration sensor is detected by negatively biasing the sensor using a bias control circuit. A microcomputer estimates a saturated current thereof at one time before the current flowing through the sensor section ends rising based on a current detected by a current detecting circuit at that time. Further, the sensor is positively biased right after the elapse of a negative bias voltage application period by the bias control circuit. The microcomputer determines the air-fuel ratio based on the current flowing through the sensor at that time. The period in which the negative bias is applied is variably set appropriately by the microcomputer in response to changes of engine temperature and intake air amount. Furthermore, to activate the sensor quickly, the temperature of the sensor section is detected and a heater is controlled based thereon.

    摘要翻译: 为了缩短不能检测氧浓度的时间,通过使用偏置控制电路对传感器进行负偏压来检测氧浓度传感器的温度。 微型计算机在流过传感器部分的电流在此之前基于当前检测电路检测到的电流来一次估计其饱和电流。 此外,传感器在通过偏置控制电路经过负偏压施加周期之后被正偏压。 微型计算机基于当时流过传感器的电流来确定空燃比。 响应于发动机温度和进气量的变化,施加负偏压的周期可由微型计算机适当地设定。 此外,为了快速地激活传感器,检测传感器部分的温度并且基于此控制加热器。

    Negative electrode for lithium secondary cells and lithium secondary
cells using the same
    107.
    发明授权
    Negative electrode for lithium secondary cells and lithium secondary cells using the same 失效
    锂二次电池用负极及使用其的锂二次电池

    公开(公告)号:US5498764A

    公开(公告)日:1996-03-12

    申请号:US308491

    申请日:1994-09-21

    CPC分类号: H01M4/13 H01M4/04

    摘要: A negative electrode for lithium secondary cells comprises a substrate having a metallic lithium matrix on at least a surface portion thereof. An element is dispersed and doped in the lithium matrix and has an electronegativity greater than that of metallic lithium. The element is present in the matrix at a concentration of from less than 5.times.10.sup.19 atoms/cm.sup.3 to 5.times.10.sup.15 atoms/cm.sup.3. By this, dendrite crystals of lithium are suppressed from forming during the course of charge and discharge cycles. A lithium secondary cell using the negative electrode is also described.

    摘要翻译: 锂二次电池用负极包括在至少其表面部分具有金属锂基质的基板。 元素在锂基体中分散掺杂,电负性大于金属锂的电负性。 该元素以小于5×1019原子/ cm3至5×1015原子/ cm3的浓度存在于基质中。 由此,在充放电循环过程中,锂的枝晶晶体被抑制成形。 还描述了使用负极的锂二次电池。

    Image sensing system
    109.
    发明授权
    Image sensing system 失效
    影像感应系统

    公开(公告)号:US5469239A

    公开(公告)日:1995-11-21

    申请号:US319632

    申请日:1994-10-07

    摘要: An imaging sensing system includes a solid state image device composed of one chip and a controller for controlling the solid state image device. The solid state image device further includes an image sensor of a charge accumulation type for receiving light from an object and for outputting an electric signal to the controller. Further, an exemplary embodiment of an image device includes a decoder for decoding a control signal and for outputting a decode signal. A timing signal output indicates the timing of a charge accumulation of an image sensor controller for controlling the image sensor in accordance with the decode signal. In an exemplary embodiment, the controller includes an A/D convertor for converting the electric signal into a digital signal.

    摘要翻译: 一种成像感测系统包括由一个芯片组成的固态图像装置和用于控制固态图像装置的控制器。 固态图像装置还包括用于从物体接收光并将电信号输出到控制器的电荷累积型的图像传感器。 此外,图像装置的示例性实施例包括用于解码控制信号并输出​​解码信号的解码器。 定时信号输出表示根据解码信号控制图像传感器的图像传感器控制器的电荷累积的定时。 在示例性实施例中,控制器包括用于将电信号转换为数字信号的A / D转换器。

    Photocurrent charge type exposure measuring apparatus
    110.
    发明授权
    Photocurrent charge type exposure measuring apparatus 失效
    光电充电式曝光测量装置

    公开(公告)号:US5376992A

    公开(公告)日:1994-12-27

    申请号:US114394

    申请日:1993-09-01

    CPC分类号: G03B7/091

    摘要: An output current of a photodiode is charged in a capacitor, and the voltage change of the capacitor is monitored by a plurality of comparators. The time required for the capacitor voltage to reach a predetermined value is counted by using a clock signal input unit for inputting a clock signal of a predetermined frequency, and a counter for counting an upper part of a number corresponding to a logarithm of a number of clocks of the clock signal generated after the integration start by a photoelectric conversion unit. The outputs of the comparators when the counter counts the upper part are latched, and the lower part of the number is supplied.

    摘要翻译: 光电二极管的输出电流被充电到电容器中,电容器的电压变化被多个比较器监视。 通过使用用于输入预定频率的时钟信号的时钟信号输入单元计数电容器电压达到预定值所需的时间,以及用于计数对应于数量的对数的数字的上部的计数器 由光电转换单元在积分开始之后产生的时钟信号的时钟。 当计数器计数上部时,比较器的输出被锁存,并且提供数字的下半部分。