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    • 53. 发明申请
    • FLOW SENSOR ELEMENT AND ITS SELF-CLEANING
    • 流量传感器元件及其自清洁
    • US20080264166A1
    • 2008-10-30
    • US12108878
    • 2008-04-24
    • Karlheinz WIENANDKarlheinz ULLRICHMatthias MUZIOL
    • Karlheinz WIENANDKarlheinz ULLRICHMatthias MUZIOL
    • G01F1/68
    • G01F1/6983G01F1/6845G01F1/692
    • A flow sensor element and a method for self-cleaning of the flow sensor element are provided, in which a temperature-measuring element and a heating element are arranged on a carrier element, and these elements can form a multiple-part ceramic component. The temperature-measuring element has a platinum thin-film resistor on a ceramic substrate for the temperature measurement and is heated with an additional platinum thin-film resistor. A measurement device, in particular an anemometric measurement device of a flow sensor, contains film resistors mounted in at least one opening of a cover or a hollow body. Two of the film resistors have resistance values differing by one to three orders of magnitude. The anemometric measurement device has a temperature sensor and a heat output sensor set in a carrier element. The temperature sensor has a temperature-measuring resistor and a heat conductor, as platinum thin-film or thick-film resistors, on a ceramic substrate.
    • 提供了流量传感器元件和流量传感器元件的自清洁方法,其中温度测量元件和加热元件布置在载体元件上,并且这些元件可以形成多部件陶瓷部件。 温度测量元件在陶瓷基板上具有用于温度测量的铂薄膜电阻器,并用附加的铂薄膜电阻器加热。 测量装置,特别是流量传感器的气流测量装置包含安装在盖子或中空体的至少一个开口中的薄膜电阻器。 两个薄膜电阻器的电阻值相差一到三个数量级。 风速测量装置具有设置在载体元件中的温度传感器和热输出传感器。 温度传感器在陶瓷基板上具有温度测量电阻和作为铂薄膜或厚膜电阻的导热体。
    • 56. 发明授权
    • Apparatus for measuring physical properties of fluids
    • 用于测量流体物理性能的装置
    • US5247156A
    • 1993-09-21
    • US908314
    • 1992-07-03
    • Pierre Favre
    • Pierre Favre
    • G01F1/692G01F1/698G01N33/00G01P5/12
    • G01P5/12G01F1/692G01F1/698G01F1/6983G01N33/0029
    • The apparatus is comprised of two sensors of the thermal type (11a, 11b) made of materials resisting without any alteration to a temperature of 650.degree. C. Probes (15a, 15b) are controlled by a microprocessor (16) to come periodically and momentarily in contact with the sensors in order to calculate (through microprocessor (16)) the thermal time constant of the sensors presenting a deposition layer of environmental polutants. The microprocessor (16) compares the value of the time constant with an order value that commands the closure of a shunt switch (17) of a resistance (18) which, when short-circuited, determines a reinforced heating of the sensors to bring them to a temperature of incineration of organic materials originating from the pollution of the ambient medium and deposited on said sensors. Thus, the sensors are maintained in the cleanliness conditions of their surface, thereby providing for the accuracy of information supplied by the sensors outside cleaning periods.
    • 该装置由两种传感器构成,这些传感器由不受温度变化650℃的材料制成的材料制成。探针(15a,15b)由微处理器(16)控制,以定期和瞬时地进行 与传感器接触以便计算(通过微处理器(16))传感器呈现环境污染物沉积层的热时间常数。 微处理器(16)将时间常数的值与命令闭合电阻(18)的分流开关(17)的顺序值进行比较,电阻(18)在短路时确定传感器的加强加热以使它们 达到源自环境介质污染并沉积在所述传感器上的有机材料的温度。 因此,传感器保持在其表面的清洁度条件下,从而提供传感器在清洁周期之外提供的信息的准确性。
    • 57. 发明授权
    • Heat-wire type air flow measurement apparatus
    • 热丝式气流测量装置
    • US4669306A
    • 1987-06-02
    • US743492
    • 1985-06-11
    • Susumu AkiyamaKatsunori ItoToshitaka YamadaTiaki MizunoMasumi Kinugawa
    • Susumu AkiyamaKatsunori ItoToshitaka YamadaTiaki MizunoMasumi Kinugawa
    • G01F1/68G01F1/698G01F15/12
    • G01F1/6986G01F1/6983
    • A heat generating element having a thermal characteristic such that its resistance varies in response to changes in temperature is provided in the intake pipe of an engine. A heating power, the voltage of which is set by a reference voltage source, is supplied to the heat generating element via a transistor. The supply of this heating power is controlled by a start pulse signal periodically generated by a set flip-flop circuit when the ignition switch is on. When the heat generating element reaches a predetermined temperature, the supply is cut off by the flip-flop circuit. A measurement signal having a pulse width corresponding to the time period of heating power supply is generated from the flip-flop circuit. The opening of the ignition switch is detected and a one-shot multivibrator is driven to produce a burn-off signal having a pulse width to which the burn-off period corresponds. This burn-off control signal turns the transistor on and heating power is supplied to the heat generating element and the voltage of the reference power source is reduced so that the voltage of the heating power is switched to a low level.
    • 在发动机的进气管中设置具有热特性使得其电阻随温度变化而变化的发热元件。 其电压由参考电压源设定的加热功率通过晶体管提供给发热元件。 当点火开关接通时,通过由设置的触发器电路周期性地产生的起动脉冲信号来控制该加热功率的供应。 当发热元件达到预定温度时,电源被触发器电路切断。 从触发电路产生具有与加热电源的时间段对应的脉冲宽度的测量信号。 检测点火开关的打开,并且驱动单稳态多谐振荡器以产生具有燃烧时间对应的脉冲宽度的燃烧断开信号。 该熄火控制信号使晶体管接通,向发热元件供给加热电力,降低基准电源的电压,使加热电力的电压切换为低电平。
    • 58. 发明授权
    • Measuring apparatus for internal combustion engine
    • 内燃机测量装置
    • US4596138A
    • 1986-06-24
    • US721182
    • 1985-04-08
    • Katsunori ItoSusumu AkiyamaTiaki MizunoToshitaka YamadaTomoaki Abe
    • Katsunori ItoSusumu AkiyamaTiaki MizunoToshitaka YamadaTomoaki Abe
    • F02D41/00F02D41/18F02D41/34G01F1/698G01M15/00
    • G01F1/6986F02D41/187G01F1/6983
    • The intake airflow rate supplied to an internal combustion engine is measured and an obtained airflow rate measurement signal is used for detecting the operating state of the internal combustion engine. The internal combustion engine is electronically controlled, and an airflow rate measuring unit includes a heat-generating element having a temperature-resistance characteristic. A heating current which rises in correspondence with a signal synchronous with rotation of the engine is supplied to the heat-generating element. The heating current is controlled to rise when the heat-generating element is heated to a predetermined temperature, and the heating current duration indicates the airflow rate measurement signal. A burn-off command signal is generated so as to burn off dust attached to the heat-generating element. The command signal is used to generate a periodic signal having a preset effective duration. The pulse signal sets a continuous supply of the heating current to the element for the pulse duration, so that the heat-generating element is heated to a temperature for burning off dust attached thereto.
    • 测量供应到内燃机的进气流量,并且使用获得的气流速率测量信号来检测内燃机的运行状态。 内燃机是电子控制的,气流量测量单元包括具有耐温特性的发热元件。 对应于与发动机的旋转同步的信号上升的加热电流被供应到发热元件。 当发热元件被加热到预定温度时,加热电流被控制上升,加热电流持续时间指示气流速度测量信号。 产生燃烧命令信号,以便燃烧附着在发热元件上的灰尘。 命令信号用于产生具有预设有效持续时间的周期信号。 脉冲信号使脉冲持续时间内的元件的加热电流连续供给,从而将发热元件加热至附着于其上的灰尘的温度。
    • 59. 发明授权
    • Method and apparatus for preventing damage by overheating to an air flow
rate meter resistor
    • 防止空气流量计电阻器过热损坏的方法和装置
    • US4538456A
    • 1985-09-03
    • US486762
    • 1983-04-20
    • Heinz GneissWerner Wunsch
    • Heinz GneissWerner Wunsch
    • G01F1/68G01F1/696G01F1/698G01F15/12
    • G01F1/68G01F1/6983
    • A method for preventing damage to a temperature-dependent resistor disposed in a flow cross section caused by overheating as a result of the ignition of a combustible, gaseous mixture during a burn-off procedure is proposed. A heating resistor is disposed in the flow cross section in the vicinity of the temperature-dependent resistor which is supplied with heating current by an electronic regulating circuit in such a manner that during the measuring operation the heating resistor has no current flowing through it, while immediately following the termination of the measuring operation but prior to the initiation of the burn-off procedure at the temperature-dependent resistor, the heating resistor experiences a flow of electric current through it, which heats it to an elevated temperature at which any combustible gases located in its vicinity ignite and burn.
    • 提出了一种防止由于燃烧过程中可燃气体混合物的点燃而导致的由过热引起的流动横截面中的温度依赖电阻的损坏的方法。 在通过电子调节电路供给加热电流的温度相关电阻附近的流动横截面中设置加热电阻器,使得在测量操作期间,加热电阻器没有电流流过它,同时 紧接在测量操作结束之后但是在温度依赖电阻器开始燃烧过程之前,加热电阻器经受其中的电流,其将其加热到任何可燃气体 位于其附近点燃和燃烧。