Method for filtering digital signals in a pressure transmitter
    91.
    发明授权
    Method for filtering digital signals in a pressure transmitter 失效
    用于过滤压力变送器中的数字信号的方法

    公开(公告)号:US5381355A

    公开(公告)日:1995-01-10

    申请号:US168946

    申请日:1993-12-17

    IPC分类号: G01L9/04 G06F15/31 G06J1/00

    CPC分类号: G01L19/083

    摘要: A method for filtering digital signals in a pressure transmitter. The transmitter includes a microprocessor. In each operating cycle of the microprocessor included in the transmitter, the method determines if there are any noise spikes in the signal at the input to the microprocessor representative of pressure and provides rejection for such spikes. The method also provides for a faster response to a step change in pressure than is provided by conventional filtering methods and also dampens small fluctuations in the filtered output signal.

    摘要翻译: 一种用于过滤压力变送器中的数字信号的方法。 发射机包括微处理器。 在包括在发射机中的微处理器的每个操作周期中,该方法确定在代表压力的微处理器的输入处的信号中是否存在任何噪声尖峰,并且提供对这种尖峰的拒绝。 该方法还提供比通过常规滤波方法提供的更快的压力阶跃变化的响应,并且还抑制滤波的输出信号中的小的波动。

    Pulsed pressure sensor circuit and method therefor
    92.
    发明授权
    Pulsed pressure sensor circuit and method therefor 失效
    脉冲压力传感器电路及其方法

    公开(公告)号:US5351549A

    公开(公告)日:1994-10-04

    申请号:US954996

    申请日:1992-10-01

    CPC分类号: G01L9/06

    摘要: A pulsed pressure sensor circuit (11) with increased sensitivity for measuring low pressures. A pulse generation circuit (12) is enabled by a microprocessor (28) to output a voltage pulse. The voltage pulse biases a pressure sensor (17) which has a port exposed to a pressure to be sensed. The pressure sensor (17) outputs a differential voltage which is proportional to the pressure at the port. The differential voltage is amplified by an amplifier (23) which has an output coupled to the microprocessor (28). A voltage divider circuit (26) is coupled to the pulse generation circuit (12) and has an output coupled to the microprocessor (28). The microprocessor (28) samples the voltages at the output of the amplifier (23) and the output of the voltage divider circuit (26). Microprocessor (28) then calculates the pressure using the sampled voltages and data stored in memory.

    摘要翻译: 脉冲压力传感器电路(11)具有增加的测量低压的灵敏度。 脉冲发生电路(12)由微处理器(28)启动以输出电压脉冲。 电压脉冲偏置压力传感器(17),其具有暴露于要感测的压力的端口。 压力传感器(17)输出与端口压力成比例的差分电压。 差分电压由具有耦合到微处理器(28)的输出的放大器(23)放大。 分压器电路(26)耦合到脉冲发生电路(12)并且具有耦合到微处理器(28)的输出。 微处理器(28)对放大器(23)的输出端和分压器电路(26)的输出端的电压进行采样。 微处理器(28)然后使用存储在存储器中的采样电压和数据来计算压力。

    On-line fishing depth indicator
    93.
    发明授权
    On-line fishing depth indicator 失效
    在线钓鱼深度指示器

    公开(公告)号:US5351538A

    公开(公告)日:1994-10-04

    申请号:US137394

    申请日:1993-10-14

    CPC分类号: A01K91/20 G01F23/18 G01L9/04

    摘要: An on-line fishing depth indicator is adapted to be placed either in series or in parallel on a typical fishing line in combination with fishing bait. The indicator is adapted to read and store the maximum depth of the bait during a trolling operation under controlled conditions. This permits the user to determine the performance of the bait under certain, predefined conditions. The electronics and pressure transducers associated with the indicator are self-contained in the unit.

    摘要翻译: 在线钓鱼深度指示器适用于与钓鱼诱饵结合在一起的典型钓鱼线上串联或并联放置。 该指示器适于在受控条件下的拖钓操作期间读取和存储诱饵的最大深度。 这允许用户在特定的预定条件下确定诱饵的性能。 与指示器相关的电子和压力传感器在设备中是独立的。

    Semiconductor strain sensor
    94.
    发明授权
    Semiconductor strain sensor 失效
    半导体应变传感器

    公开(公告)号:US5329271A

    公开(公告)日:1994-07-12

    申请号:US878429

    申请日:1992-05-04

    CPC分类号: G01L1/18 G01P15/123

    摘要: A semiconductor strain sensor includes a silicon substrate, a strain resistive element and electrodes. The silicon substrate has a deformable portion which is deformed when stress is applied to it. The strain resistive element is formed on the deformable portion and has an at least a first layer and a second layer which form a heterojunction between them. The first layer is doped with impurities so that a two-dimensional carrier gas layer is formed in the second layer near the heterojunction. The two-dimensional carrier gas layer has carriers originating from the impurities. The electrodes electrically contact the two dimensional carrier gas layer. Change of resistance of the strain resistive element in accordance with the stress is detected through the electrodes.

    摘要翻译: 半导体应变传感器包括硅衬底,应变电阻元件和电极。 硅衬底具有可变形部分,当其施加应力时,可变形部分变形。 应变电阻元件形成在可变形部分上,并且具有在它们之间形成异质结的至少第一层和第二层。 第一层掺杂杂质,使得在异质结附近的第二层中形成二维载气层。 二维载气层具有源自杂质的载体。 电极与二维载气层电接触。 通过电极检测应变电阻元件根据应力的电阻变化。

    Semiconductor pressure sensor for sensing pressure applied thereto
    95.
    发明授权
    Semiconductor pressure sensor for sensing pressure applied thereto 失效
    用于感测施加到其上的压力的半导体压力传感器

    公开(公告)号:US5296730A

    公开(公告)日:1994-03-22

    申请号:US680

    申请日:1993-01-05

    摘要: A semiconductor pressure sensor according to the present invention comprises a semiconductor substrate having a first surface, a second surface opposite to the first surface and a recess formed in the first surface, the recess defining an interior surface including a bottom surface; and a diffusion region extending from the adjacency of the bottom surface to the second surface. A pressure-sensitive resistance of the semiconductor pressure sensor is formed in the vicinity of the bottom surface of a diaphragm. Therefore, the pressure-sensitive resistance can be formed so as to be brought into alignment with the position of the diaphragm after the formation of the diaphragm. Accordingly, a semiconductor pressure sensor, which does not cause a displacement in position between the diaphragm and the pressure-sensitive resistance and is excellent in accuracy, can be easily fabricated. Further, since the pressure-sensitive resistance can be formed according to the shape of the diaphragm, the diaphragm can be reduced in size and fabricated in the form of a thin film.

    摘要翻译: 根据本发明的半导体压力传感器包括具有第一表面,与第一表面相对的第二表面和形成在第一表面中的凹部的半导体衬底,所述凹部限定包括底表面的内表面; 以及从底面的邻接延伸到第二表面的扩散区域。 半导体压力传感器的压敏电阻形成在隔膜的底面附近。 因此,可以形成压敏电阻以便在形成隔膜之后与隔膜的位置对准。 因此,可以容易地制造不导致膜片与压敏电阻之间位置偏移并且精度优异的半导体压力传感器。 此外,由于可以根据隔膜的形状形成压敏电阻,所以可以减小膜片的尺寸并以薄膜的形式制造。

    Semiconductor pressure sensor assembly having an improved package
structure
    96.
    发明授权
    Semiconductor pressure sensor assembly having an improved package structure 失效
    半导体压力传感器组件具有改进的封装结构

    公开(公告)号:US5266827A

    公开(公告)日:1993-11-30

    申请号:US24454

    申请日:1993-03-01

    申请人: Kazuyuki Kato

    发明人: Kazuyuki Kato

    IPC分类号: G01L9/04 G01L9/00 H01L29/84

    摘要: A semiconductor pressure sensor assembly, comprising a receptacle having a floor and including a first cavity recessed within a first portion of the floor, and a second cavity recessed within a second portion of the floor and connected to the first cavity at a first junction. A semiconductor pressure sensor is within the first cavity, and a plurality of bonding pads are disposed about a periphery of a top surface of the pressure sensor chip other than at a location of the first junction, a plurality of external conducting terminals are disposed about a periphery of the receptacle other than at the location of the first junction, and a plurality of wires connect the external conducting terminals to respective ones of the bonding pads. A gelatinous material is within the first and second cavities, and the second cavity serves as a first work region from which an excess of the gelatinous material within the first cavity can be removed.

    Semiconductor pressure sensor
    98.
    发明授权
    Semiconductor pressure sensor 失效
    半导体压力传感器

    公开(公告)号:US5207102A

    公开(公告)日:1993-05-04

    申请号:US763217

    申请日:1991-09-20

    摘要: A semiconductor pressure sensor is manufactured by integrally encapsulating a semiconductor pressure, sensor chip, a pedestal, leads, wires and a die pad in an outer package except for the surface of a diaphragm of the semiconductor pressure sensor chip and the reverse side of the die pad. The ratio of the thickness of the pedestal to the thickness of the semiconductor pressure sensor chip is 7.5 or less, while the ratio of the diameter of an opening formed in the outer package at the surface of the diaphragm and the diameter of the diaphragm is 1 or more. The thermal stress generated in the semiconductor pressure sensor chip can freely be reduced to a desired value, and a semiconductor pressure sensor exhibiting a desired accuracy can therefore be obtained. Furthermore, since the semiconductor pressure sensor can be manufactured by an ordinary IC manufacturing process, a semiconductor pressure sensor with reduced cost and having high quality can be produced.

    摘要翻译: 半导体压力传感器是通过将半导体压力传感器芯片,基座,引线,导线和芯片焊盘整体地封装在除了半导体压力传感器芯片的隔膜的表面和模具的反面之外的外部封装中来制造的 垫。 基座的厚度与半导体压力传感器芯片的厚度的比率为7.5以下,而在隔膜的表面形成的外部开口的直径和隔膜的直径的比率为1 或者更多。 在半导体压力传感器芯片中产生的热应力可以自由地降低到期望值,因此可以获得呈现期望精度的半导体压力传感器。 此外,由于可以通过普通的IC制造工艺制造半导体压力传感器,所以可以制造成本低且质量好的半导体压力传感器。

    Programmable compensation of bridge circuit thermal response
    99.
    发明授权
    Programmable compensation of bridge circuit thermal response 失效
    桥式电路可编程补偿热响应

    公开(公告)号:US5197334A

    公开(公告)日:1993-03-30

    申请号:US710215

    申请日:1991-06-04

    申请人: Robert A. Guziak

    发明人: Robert A. Guziak

    IPC分类号: G01L1/22 G01L9/04

    CPC分类号: G01L1/2281 G01L9/045

    摘要: The present invention provides compensation for temperature in a transducer by connecting the adjustment resistors to the transducer itself to provide a correct transducer output. A number of switches are used to couple the adjustment resistors to the transducer circuit. An individual resistor may be coupled in parallel or in series with a transducer resistance. The control input for the switches are each coupled to a separate bit output of a multiple bit memory. The memory is programmed to control the duty cycle of the switches when addressed.

    摘要翻译: 本发明通过将调节电阻器连接到换能器本身来提供换能器中的温度补偿,以提供正确的换能器输出。 多个开关用于将调整电阻器耦合到换能器电路。 单个电阻器可以与换能器电阻并联或串联耦合。 开关的控制输入各自耦合到多位存储器的单独的位输出。 存储器被编程为在寻址时控制开关的占空比。

    Pressure sensor for use in internal combustion engine
    100.
    发明授权
    Pressure sensor for use in internal combustion engine 失效
    用于内燃机的压力传感器

    公开(公告)号:US5168192A

    公开(公告)日:1992-12-01

    申请号:US763137

    申请日:1991-09-20

    IPC分类号: G01L9/04 G01L19/02 H01L41/113

    CPC分类号: G01L23/10 H01L41/1132

    摘要: A pressure sensor for use in an internal combustion engine includes a diaphragm member having a cylindrical part and a pressure receiving part which is subjected to an axial motion in an axial direction of the diaphragm member when a pressure in an external environment is applied to the pressure receiving part, a pressure detection member having pressure distributing parts and a piezoelectric part for generating a signal indicative of the applied pressure when it is stressed in response to the axial motion of the pressure receiving part, and a pressure transfer member for transferring the motion from the pressure receiving part to the pressure detection member, the pressure transfer member including a spherical member capable of rolling relative to the diaphragm member in a direction perpendicular to the axial direction of the diaphragm member at a position between the pressure receiving part and the pressure detection member.

    摘要翻译: 用于内燃机的压力传感器包括:隔膜部件,具有圆筒部和压力接收部,当外部环境中的压力施加于压力时,受压部在隔膜部件的轴向方向上受到轴向运动 具有压力分配部的压力检测部件和压电部件,用于响应于受压部的轴向运动而产生表示施加的压力的信号,以及压力传递部件,用于将运动从 所述压力接收部分到所述压力检测构件,所述压力传递构件包括能够在所述压力接收部和所述压力检测之间的位置处沿与所述隔膜构件的轴向垂直的方向相对于所述隔膜构件滚动的球形构件 会员。