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    • 4. 发明申请
    • Method For Monitoring The Function of a Capacitive Pressure Measurement Cell
    • US20220412817A1
    • 2022-12-29
    • US17769968
    • 2020-10-20
    • IFM Electronic gmbH
    • Manfred MaurusPeter Kimbel
    • G01L1/14
    • The invention relates to a method for monitoring the function of a capacitive pressure measurement cell (10) which has a measuring capacitor (CM) and a reference capacitor (CR), to which an internal excitation voltage UE0 in the form of an alternating square-wave signal is applied. According to the invention, in order to allow the detection of a disturbing influence on the measurement result owing to, in particular, moisture-induced leakage currents, it is proposed that the corresponding voltage values U1, U2 be sensed from the voltage signal UCOM during the falling and/or rising signal curve at least two defined times t1, t2, and the two pairs of values t1; U1 and t2; U2 are used to determine a linear equation U=f(t), wherein the linear equation U=f(t)
      within the falling or rising signal curve is used to calculate the time tx at which the voltage value Ux set as a threshold value or switchover point in the comparator-oscillator (SG) is reached, wherein—either the time tx is compared with the actual switchover time of the comparator-oscillator (SG) and an error signal is generated in the event of significant deviation,—or the time tx is used to define a hypothetical switchover point of the comparator-oscillator (SG), from which a hypothetical working frequency is calculated, and an error signal is generated if there is significant deviation of said hypothetical working frequency from the actual working frequency of the comparator-oscillator (SG).
    • 6. 发明授权
    • Screw-in arrangement composed of a measuring device and a container
    • US11112326B2
    • 2021-09-07
    • US16756179
    • 2018-10-10
    • IFM ELECTRONIC GMBH
    • Stefan KreisGuido Knoll
    • G01L19/00F16J15/12G01L19/14
    • The invention relates to an arrangement composed of a measuring device and a container, wherein the measuring device (1) is suited for insertion into the container, which contains the medium to be measured, and wherein the container for receiving the measuring device (1) has a connector piece (20) having a passage opening extending in an axial direction and a seal land (22) projecting into the passage opening, wherein the measuring device (1) comprises a rotationally symmetric housing part (10), which is flush with the connector piece (20) and has an external cone portion (11), which forms with an internal cone portion (21) provided on the connector piece (20) a beveled sealing surface pair. According to the invention, the sealing element in the region of the external and internal cone portions (11, 21) consists in the front end section, which faces the medium, at least partially of a plastic, especially PEEK, or an elastomer and consists in the adjoining second section (32), facing away from the medium, of metal or ceramic or a fiber-reinforced plastic so that a defined and thus pressure- and force-resistant stop results in the axial direction between the external cone portion (11) of the measuring device (1) and the internal cone portion (21) of the connector piece (20), while independently thereof the sealing function is achieved exclusively in the front end section (31), facing the medium, of the sealing element (30).
    • 7. 发明申请
    • ARRANGEMENT COMPOSED OF A MEASURING DEVICE AND A CONTAINER
    • US20210190620A1
    • 2021-06-24
    • US16756179
    • 2018-10-10
    • IFM ELECTRONIC GMBH
    • Stefan KREISGuido KNOLL
    • G01L19/00G01L19/14F16J15/12
    • The invention relates to an arrangement composed of a measuring device and a container, wherein the measuring device (1) is suited for insertion into the container, which contains the medium to be measured, and wherein the container for receiving the measuring device (1) has a connector piece (20) having a passage opening extending in an axial direction and a seal land (22) projecting into the passage opening, wherein the measuring device (1) comprises a rotationally symmetric housing part (10), which is flush with the connector piece (20) and has an external cone portion (11), which forms with an internal cone portion (21) provided on the connector piece (20) a beveled sealing surface pair. According to the invention, the sealing element in the region of the external and internal cone portions (11, 21) consists in the front end section, which faces the medium, at least partially of a plastic, especially PEEK, or an elastomer and consists in the adjoining second section (32), facing away from the medium, of metal or ceramic or a fiber-reinforced plastic so that a defined and thus pressure- and force-resistant stop results in the axial direction between the external cone portion (11) of the measuring device (1) and the internal cone portion (21) of the connector piece (20), while independently thereof the sealing function is achieved exclusively in the front end section (31), facing the medium, of the sealing element (30).
    • 10. 发明授权
    • Light propagation time camera
    • 光传播时间相机
    • US09538109B2
    • 2017-01-03
    • US13876189
    • 2011-08-22
    • Florian Forster
    • Florian Forster
    • H04N5/378G01S7/497G01S17/89
    • H04N5/378G01S7/497G01S17/89
    • A time-of-flight camera includes a photosensor and a reference photosensor. Each of the photosensors have accumulation gates and each are configured as a photomixing detector (PMD). A readout device is connected to the accumulation gates of the photosensor and to the accumulation gates of the reference photosensor. The readout device is configured to read out an electric quantity that corresponds to a charge that is present at respective ones of the accumulation gates. An integration time of accumulating the charges is the same for the photosensor and for the reference photosensor and is dimensioned so as to prevent the reference photosensor from reaching saturation during operation of the time-of-flight camera.
    • 飞行时间相机包括光电传感器和参考光电传感器。 每个光电传感器具有堆积门,并且每个被配置为光混合检测器(PMD)。 读出装置连接到光传感器的累积栅极和参考光电传感器的累积栅极。 读出装置被配置为读出对应于存在于各个累加门的电荷的电量。 累积电荷的积分时间对于光电传感器和参考光电传感器是相同的,并且其尺寸被设计为防止参考光电传感器在飞行时间相机的操作期间达到饱和。