Apparatus for providing an output proportional to pressure divided by temperatue (P/T)
    11.
    发明申请
    Apparatus for providing an output proportional to pressure divided by temperatue (P/T) 失效
    用于提供与压力除以温度(P / T)成比例的输出的装置,

    公开(公告)号:US20070295094A1

    公开(公告)日:2007-12-27

    申请号:US11431167

    申请日:2006-05-09

    CPC classification number: G01M3/3236 G01L9/06

    Abstract: A circuit produces an output that is proportional to the molar density of gas in a chamber. The circuit employs an operational amplifier which measures the temperature using a RTD or other element that changes resistance with temperature. The RTD is placed such that it produces a decreasing current draw at the inverting input of the operational amplifier as the temperature increases. This decreasing current draw in turn produces a decreasing voltage at the output of the operational amplifier. By changing the ratio of resistors connected to the non-inverting terminal of the operational amplifier one changes the offset of the output voltage. By changing the feedback resistor connected from the output of the operational amplifier to the inverting terminal and connecting the output of the inverting terminal to a voltage divider including the RTD device, one can change the gain with temperature. Thus the output voltage of the operational amplifier is carefully controlled to be proportional to 1/T for many different temperature scales and ranges. The output of the amplifier serves as the biasing voltage for a pressure transducer.

    Abstract translation: 电路产生与腔室中气体的摩尔密度成比例的输出。 该电路采用运算放大器,其使用RTD或其他随温度变化的元件来测量温度。 放置RTD使得它在温度升高时在运算放大器的反相输入端产生降低的电流消耗。 这种减小的电流消耗又在运算放大器的输出端产生降低的电压。 通过改变连接到运算放大器的同相端的电阻的比例,可以改变输出电压的偏移。 通过将从运算放大器的输出端连接的反馈电阻改变为反相端子,并将反相端子的输出端连接到包括RTD器件的分压器,可以随温度改变增益。 因此,对于许多不同的温度范围和范围,运算放大器的输出电压被小心地控制成与1 / T成比例。 放大器的输出用作压力传感器的偏置电压。

    Personal identification apparatus using measured tactile pressure

    公开(公告)号:US20070115093A1

    公开(公告)日:2007-05-24

    申请号:US11651737

    申请日:2007-01-10

    Applicant: Anthony Kurtz

    Inventor: Anthony Kurtz

    CPC classification number: G07C9/00158 G06F21/32 G06K9/00382

    Abstract: A personal identification system employs a matrix of pressure sensors mounted to a plate having a template of a human hand. When a person's hand is placed on the plate and overlying the template a pressure profile of the person's hand is provided. This profile is compared with a stored pressure profile of the same person's hand. If the pressure points or profiles correlate a positive identification of the person is made.

    High temperature pressure sensing system
    13.
    发明申请
    High temperature pressure sensing system 有权
    高温压力传感系统

    公开(公告)号:US20070068267A1

    公开(公告)日:2007-03-29

    申请号:US11234724

    申请日:2005-09-23

    CPC classification number: G01L9/065

    Abstract: A high temperature pressure sensing system (transducer) including: a pressure sensing piezoresistive sensor formed by a silicon-on-insulator (SOI) process; a SOI amplifier circuit operatively coupled to the piezoresistive sensor; a SOI gain controller circuit including a plurality of resistances that when selectively coupled to the amplifier adjust a gain of the amplifier; a plurality of off-chip contacts corresponding to the resistances, respectively, for electrically activating the corresponding resistances and using a metallization layer for the SOI sensor and SOI ASIC suitable for high temperature interconnections (bonding); wherein the piezoresistive sensor, amplifier circuit and gain control circuit are suitable for use in environments having a temperature greater than 175 degrees C. and reaching between 250° C. and 300° C., and wherein the entire transducer has a high immunity to nuclear radiation.

    Abstract translation: 一种高温压力感测系统(传感器),包括:由绝缘体上硅(SOI)工艺形成的压力感测压阻传感器; 可操作地耦合到压阻传感器的SOI放大器电路; 包括多个电阻的SOI增益控制器电路,当选择性地耦合到放大器时调节放大器的增益; 分别对应于电阻的多个片外触点,用于电激活相应的电阻并且使用用于SOI传感器的金属化层和适合于高温互连(接合)的SOI ASIC; 其中所述压阻传感器,放大器电路和增益控制电路适用于温度高于175摄氏度并达到250℃至300℃的环境中,并且其中整个换能器具有对核的高免疫性 辐射。

    High temperature interconnects for high temperature transducers
    14.
    发明申请
    High temperature interconnects for high temperature transducers 有权
    高温互感器用于高温传感器

    公开(公告)号:US20060157840A1

    公开(公告)日:2006-07-20

    申请号:US11039587

    申请日:2005-01-20

    CPC classification number: G01L9/0055 G01L19/0084

    Abstract: A silicon wafer is fabricated utilizing two or more semiconductor wafers. The wafers are processed using conventional wafer processing techniques and the wafer contains a plurality of output terminals which essentially are platinum titanium metallization or high temperature contacts. A glass cover member is provided which has a plurality of through holes. Each through hole is associated with a contact on the semiconductor wafer. A high temperature lead is directed through the through hole or aperture in the glass cover and is bonded directly to the appropriate contact. The lead is of a sufficient length to extend into a second non through aperture in the contact glass. The non through aperture is located on the side of the contact glass not in contact with the silicon sensor. The non through aperture is then filled with a high temperature conductive glass frit. A plurality of slots are provided. Each slot is associated with a through and a non through aperture to accommodate the wire as directed from the through aperture through the slot and into the non through aperture. The slots provide means of retaining or securing the wire as it passes from the through aperture to the non through aperture. The non through apertures as indicated are filled with a high temperature conductive glass frit which glass frit accommodates suitable pins.

    Abstract translation: 利用两个或更多个半导体晶片制造硅晶片。 使用常规晶片处理技术处理晶片,并且晶片包含基本上是铂钛金属化或高温接触的多个输出端子。 提供了一种具有多个通孔的玻璃盖构件。 每个通孔与半导体晶片上的接触相关联。 高温引线通过玻璃盖中的通孔或孔直接接合到适当的接触处。 引线具有足够的长度以延伸到接触玻璃中的第二非通孔中。 非通孔位于接触玻璃的不与硅传感器接触的一侧。 然后用高温导电玻璃料填充非通孔。 提供多个槽。 每个狭槽与通孔和非通孔相关联,以便从通孔穿过狭槽引导并且进入非通孔。 这些槽提供了当线从通孔到非通孔时保持或固定的装置。 如所示的非通孔填充有玻璃料容纳适当针脚的高温导电玻璃料。

    Solid state electronic pressure switch

    公开(公告)号:US20050174247A1

    公开(公告)日:2005-08-11

    申请号:US10776707

    申请日:2004-02-11

    CPC classification number: H03K17/9625 H03K17/693

    Abstract: There is disclosed an electronic single pole double throw switch which completely replaces a prior art mechanical switch. The mechanical switch normally exists in a suitable vehicle, such as an aircraft or any device, but basically has three output terminals. Two terminals are associated with a first and a second lamp, which lamps have one terminal coupled to an operating voltage. Essentially, in order to replace the mechanical switch, an electronic switch also is wired to the three terminals exactly as a mechanical switch would be so wired. The electronic switch has two states. In each state, one of the lamps is on and the corresponding switch is closed. In this state, the other lamp is off, with its corresponding switch open. This operation is the same operation as that of the mechanical switch. In the electronic switch, the voltage, which is at the output terminal of the lamp that is off, is utilized to drive a low voltage regulator which operates electronic circuitry associated with the electronic switch. The electronic switch contains a timing oscillator which produces a pulse of a narrow interval. This narrow pulse is utilized to supply operating potential to a piezoresistive bridge circuit. The activation of the bridge circuit causes the bridge circuit to produce an output during the pulse interval, which output is directed to a differential amplifier and then to a comparator. The comparator receives an operating voltage during the pulse interval and compares the pressure of the bridge circuit against a threshold pressure. If this threshold pressure is exceeded, the comparator causes a flip-flop to change state. The flip-flop has first and second outputs, each coupled to an associated switching circuit. Each switching circuit will activate an associated lamp to cause the lamp to illuminate when the flip-flop is in a given state. The state of the flip-flop can be changed during the next pulse interval if the pressure applied to the bridge circuit changes.

    TRANSDUCER WITH INTEGRAL SWITCH FOR WIRELESS ELECTRONICS
    16.
    发明申请
    TRANSDUCER WITH INTEGRAL SWITCH FOR WIRELESS ELECTRONICS 失效
    具有无线电子集成开关的传感器

    公开(公告)号:US20050109116A1

    公开(公告)日:2005-05-26

    申请号:US10722029

    申请日:2003-11-25

    CPC classification number: G01L19/003 G01L19/0038 G01L19/086

    Abstract: There is disclosed a transducer with an integral switch for wireless electronics. Essentially, the transducer contains a housing which includes a sensor device. The sensor device may be a piezoresistive Wheatstone bridge arranged in a conventional manner. The output of the bridge is coupled to a typical amplifying circuit or an analog-to-digital converter whose signal is coupled to a suitable transmitting means. The signal provided by the Wheatstone bridge is transmitted through RF, infrared or some other wireless transmission scheme to a remote location. Such transmissions schemes are well known. Associated with the sensor and secured to the sensor housing, is a push button switch which is wired in series with a battery. The battery operates to energize the sensor, including all the electronics when the sensor is in placed in a pressure sensing position. When the pressure is placed in a pressure sensing position, the push button switch, is actuated to apply operating bias to the transducer device.

    Abstract translation: 公开了一种具有用于无线电子装置的集成开关的换能器。 本质上,换能器包含一个包括传感器装置的壳体。 传感器装置可以是以常规方式布置的压阻式惠斯通电桥。 桥的输出耦合到典型的放大电路或其信号耦合到合适的发射装置的模数转换器。 惠斯通电桥提供的信号通过RF,红外或其他无线传输方案传输到远程位置。 这样的传输方案是众所周知的。 与传感器相关联并固定到传感器外壳上的是按钮开关,其与电池串联。 当传感器处于压力感测位置时,电池用于对传感器通电,包括所有电子元件。 当压力被置于压力感测位置时,按钮开关被致动以向换能器装置施加操作偏压。

    Fuel cells employing nanostructures
    17.
    发明申请
    Fuel cells employing nanostructures 审中-公开
    采用纳米结构的燃料电池

    公开(公告)号:US20080057369A1

    公开(公告)日:2008-03-06

    申请号:US11729151

    申请日:2007-03-28

    Applicant: Anthony Kurtz

    Inventor: Anthony Kurtz

    Abstract: A solid state fuel cell is fabricated from three substructures. There is a nanostructure porous semiconductor anode which is surrounded by a non-porous ring. The pore size of the anode material is sufficiently large to allow hydrogen gas to flow through and is of a sufficiently high conductivity to easily permit current flow of electrons. One side of the anode has a layer of titanium and platinum catalyst sputtered or otherwise deposited on the surface with the pores to produce a coated surface with the catalyst entering and coating the walls of the pores. A cathode is made in a similar manner and is fabricated as is the anode. There is a center electrolytic section made from a low conductivity semiconductor material. The center electrolytic section has the coated side of the anode secured to one side and has the coated side of the cathode secured to the other side. The other or un-coated face of both the anode and the cathode has an electrical contact secured thereto to permit electrons to leave the anode and to reenter the cathode. The electrolytic center structure is filled with an ionic conductor. In this manner, hydrogen is broken into ions and electrons. The electrons cause a current flow, while the ions react with oxygen and produce water which is discharged from the fuel cell as steam or vapor.

    Abstract translation: 固态燃料电池由三个子结构制成。 存在由无孔环包围的纳米结构多孔半导体阳极。 阳极材料的孔径足够大以允许氢气流过并且具有足够高的导电性以容易地允许电流的电流流动。 阳极的一侧具有溅射或以其它方式沉积在具有孔的表面上的钛和铂催化剂层,以产生涂覆表面,催化剂进入并涂覆孔的壁。 以类似的方式制造阴极并且与阳极一样制造阴极。 存在由低导电性半导体材料制成的中心电解部分。 中心电解部分具有固定到一侧的阳极的涂覆侧,并且阴极的涂覆侧固定到另一侧。 阳极和阴极的另一个或未涂覆的面具有固定到其上的电接触,以允许电子离开阳极并重新进入阴极。 电解中心结构填充有离子导体。 以这种方式,氢被分解成离子和电子。 电子引起电流,而离子与氧反应并产生作为蒸气或蒸汽从燃料电池排出的水。

    Displacement transducer
    18.
    发明申请
    Displacement transducer 失效
    位移传感器

    公开(公告)号:US20080041166A1

    公开(公告)日:2008-02-21

    申请号:US11897619

    申请日:2007-08-31

    CPC classification number: G01B7/18 G01L1/2231

    Abstract: A displacement transducer includes a load cell structure having a thick outer peripheral area, a thick inner central area and two symmetrical thin beams. The two beams are disposed along a common diameter of the structure and joins the outer peripheral area and the inner central area. At least one strain gauge is placed on a surface of one beam and at least one strain gauge is placed on a surface of the second beam. A top diaphragm cover member is secured to a top surface of the outer peripheral area and covers the two beams.

    Abstract translation: 位移传感器包括具有厚的外周区域,厚内部中心区域和两个对称薄梁的称重传感器结构。 两个梁沿着结构的公共直径设置,并且连接外围区域和内部中心区域。 至少一个应变仪放置在一个梁的表面上,并且至少一个应变仪放置在第二个梁的表面上。 顶部隔膜盖构件固定到外周区域的顶表面并且覆盖两个梁。

    High temperature LC pressure transducer and methods for making the same
    19.
    发明申请
    High temperature LC pressure transducer and methods for making the same 失效
    高温LC压力传感器及其制造方法

    公开(公告)号:US20070256501A1

    公开(公告)日:2007-11-08

    申请号:US11418653

    申请日:2006-05-05

    CPC classification number: G01L9/0075 G01L1/142

    Abstract: A high temperature pressure capacitor is fabricated utilizing two high temperature substrate wafers. The substrates may be silicon carbide (SiC) or aluminum nitride (AIN). The first substrate has a metal conductive plate positioned on a top surface thereof. The top surface and plate are covered with a dielectric layer. The second substrate has a plate accommodating recess on the top surface thereof. Deposited in the recess is a second conductive plate. The first and second wafers are bonded together via the dielectric layer where the first and second plates face each other. Upon application of a force to the first wafer the diaphragm portion of the first wafer deflects causing the first plate to move and thereby varying capacitance. An inductor may be fabricated on a bottom surface of the second wafer to provide an LC circuit whose resonant frequency varies as a function of capacitance and therefore as a function of pressure.

    Abstract translation: 使用两个高温衬底晶片制造高温压力电容器。 基板可以是碳化硅(SiC)或氮化铝(AlN)。 第一基板具有位于其顶表面上的金属导电板。 顶表面和板被介电层覆盖。 第二基板在其顶表面上具有板容纳凹部。 沉积在凹槽中的是第二导电板。 第一和第二晶片经由第一和第二板彼此面对的电介质层结合在一起。 当向第一晶片施加力时,第一晶片的隔膜部分偏转,导致第一板移动并因此改变电容。 可以在第二晶片的底表面上制造电感器以提供LC电路,其谐振频率作为电容的函数而变化,因此作为压力的函数。

    Method and apparatus for measuring knocking in internal combustion engines
    20.
    发明申请
    Method and apparatus for measuring knocking in internal combustion engines 失效
    用于测量内燃机爆震的方法和装置

    公开(公告)号:US20070186620A1

    公开(公告)日:2007-08-16

    申请号:US11353418

    申请日:2006-02-14

    CPC classification number: G01L23/221

    Abstract: A method and apparatus for measuring knocking in internal combustion engines employs a high temperature transducer, which transducer is mounted within a cylinder. The output of the transducer is solely related to pressure. The output signal from the transducer is directed to the input of a high frequency amplifier associated with a band pass filter. In this manner the combustion signal can be filtered out and one provides a signal which is only indicative of the knocking signal and of the knocking frequencies. This signal can be analyzed simply and effectively by the use of a processor such as a multimeter or a microprocessor. In a similar manner the processor can compare the combustion and knocking signal without the band pass filtering with the knocking signal with the combustion signal filtered out.

    Abstract translation: 用于测量内燃机中的爆震的方法和装置采用高温换能器,该换能器安装在汽缸内。 传感器的输出仅与压力有关。 来自传感器的输出信号被引导到与带通滤波器相关联的高频放大器的输入。 以这种方式,燃烧信号可以被滤出,并且一个提供仅指示爆震信号和爆震频率的信号。 可以通过使用诸如万用表或微处理器的处理器简单有效地分析该信号。 以类似的方式,处理器可以比较燃烧和爆震信号,而不用带有过滤掉燃烧信号的爆震信号的带通滤波。

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