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172 条记录 (耗时 0.022 秒)

    Device for the automatic testing of digital filters in moving-target indicators
    51.
    发明授权
    Device for the automatic testing of digital filters in moving-target indicators 失效
    移动目标指示器中数字滤波器自动测试的设备

    公开(公告)号：US4305076A

    公开(公告)日：1981-12-08

    申请号：US110254

    申请日：1980-01-07

    申请人： Guy Lepere ,  Didier Duval

    发明人： Guy Lepere ,  Didier Duval

    IPC分类号： G01R31/28 ,  G01S7/40 ,  G01S13/526

    CPC分类号： G01S7/40 ,  G01R31/2836 ,  G01S13/526

    摘要： One or more digital filters in the output of an echo detector in a radar or sonar system are periodically checked for correct operation by the application of a test signal to their input and the comparison of a resulting output signal with a predetermined response code stored in a read-only memory. If the comparison fails, a visual indicator is actuated; if the defective filter is one of a plurality, it is blocked and the gain of the echo detector is adjusted to compensate for the reduction in signal level. With two filters in respective circuit branches carrying detected echo signals in relative quadrature, these filters are tested alternately; failure of either of them may cause its automatic replacement by a standby filter.

    摘要翻译： 在雷达或声纳系统中的回波检测器的输出中的一个或多个数字滤波器通过将测试信号施加到它们的输入而被周期性地检查以进行正确的操作，并且将得到的输出信号与存储在 只读存储器。 如果比较失败，则启动视觉指示器; 如果有缺陷的滤波器是多个之一，则其被阻塞，并且调整回波检测器的增益以补偿信号电平的降低。 在相应电路分支中带有相对正交的检测到的回波信号的两个滤波器，交替地测试这些滤波器; 其中任何一个的故障可能导致其被备用过滤器自动更换。

    Detection circuit for monitoring the failure of a system to respond in a planned manner to an inputted control signal
    52.
    发明授权
    Detection circuit for monitoring the failure of a system to respond in a planned manner to an inputted control signal 失效
    检测电路，用于监视系统故障以计划的方式响应于输入的控制信号

    公开(公告)号：US4086530A

    公开(公告)日：1978-04-25

    申请号：US631167

    申请日：1975-11-11

    申请人： Vincent G. Coppola ,  Flavio M. Manduley ,  Daniel F. Dlugos

    发明人： Vincent G. Coppola ,  Flavio M. Manduley ,  Daniel F. Dlugos

    IPC分类号： G01R31/02 ,  G01R31/28 ,  H02P8/38

    CPC分类号： G01R31/2836

    摘要： A circuit for detecting the failure of a system to respond in a planned manner to a binary control signal includes a circuit for generating a check signal which normally changes in phase with the control signal. The failure detect circuit includes inverters for generating inverted control and check signals. AND gates compare each signal with the inverted form of the other. A NOR gate produces a failure-indicating signal when an equality is sensed.

    摘要翻译： 用于检测系统故障的电路以计划的方式响应于二进制控制信号包括用于产生正常与控制信号相位改变的检查信号的电路。 故障检测电路包括用于产生反相控制和检查信号的反相器。 AND门将每个信号与另一个的倒置形式进行比较。 当检测到相等时，或非门产生故障指示信号。

    Failure check circuit
    53.
    发明授权
    Failure check circuit 失效
    故障检查电路

    公开(公告)号：US3803569A

    公开(公告)日：1974-04-09

    申请号：US23833372

    申请日：1972-03-27

    申请人： HITACHI LTD ,  NISSAN MOTOR

    发明人： TANIGAMI T ,  IWASAKI T ,  WATANABE S

    IPC分类号： B60R21/01 ,  G01R31/00 ,  G01R31/28 ,  G08B23/00

    CPC分类号： B60R21/0176 ,  G01R31/00 ,  G01R31/006 ,  G01R31/2836

    摘要： The failure state, due to disconnection or grounding of resistors connected in parallel, is checked in such a way that diodes are connected in series, respectively between the resistors and a common terminal for the parallel connection. A check signal is supplied to the other common terminal for the parallel connection, and the signals appearing at the connection points between the resistors and the diode are compared with the supplied check signal by using a logic circuit such as an AND gate.

    FUNCTIONAL SELF-TEST FOR A PIEZOELECTRIC ELEMENT DEPLOYED IN AN END-PRODUCT
    55.
    发明申请
    FUNCTIONAL SELF-TEST FOR A PIEZOELECTRIC ELEMENT DEPLOYED IN AN END-PRODUCT 审中-公开

    公开(公告)号：US20190250200A1

    公开(公告)日：2019-08-15

    申请号：US16269788

    申请日：2019-02-07

    申请人： HONEYWELL INTERNATIONAL INC.

    发明人： David CADA

    IPC分类号： G01R29/22 ,  G01R31/01

    CPC分类号： G01R29/22 ,  G01H3/005 ,  G01H11/08 ,  G01R31/2829 ,  G01R31/2836 ,  H01L41/042 ,  H01L41/22

    摘要： Apparatus and associated methods relate to a functional self-test, including (1) generation of an excitation signal, (2) applying the excitation signal to a unit under test (UUT), the excitation signal including a cyclical signal for a first interval and substantially zero signal for a second interval, (3) determining frequency content of a UUT response signal, and (4) generating a fail result in response to the frequency content below a predetermined threshold. In an illustrative example, the UUT may be a piezoelectric element (PE). The UUT response signal may be processed by a filter, for example. A portion of the filtered UUT response signal, responding to the second interval of the excitation signal, may be analyzed by a fast Fourier transform module (FFTm), for example. In various implementations, the functional self-test may advantageously determine the health of a piezoelectric gas sensing element, periodically, in a field-deployed implementation.

    ADVANCED WARNING INDICATOR FOR EMERGENCY MEDICAL DEVICES
    59.
    发明申请
    ADVANCED WARNING INDICATOR FOR EMERGENCY MEDICAL DEVICES 审中-公开

    公开(公告)号：US20180001097A1

    公开(公告)日：2018-01-04

    申请号：US15540119

    申请日：2015-12-24

    申请人： KONINKLIJKE PHILIPS N.V.

    发明人： NORMAN MAURICE DELISLE ,  DAVID K HUNT

    IPC分类号： A61N1/39 ,  G06F19/00

    CPC分类号： A61N1/3925 ,  A61B2560/0276 ,  A61N1/39 ,  A61N1/3904 ,  A61N1/3993 ,  G01R31/2836 ,  G06F19/00 ,  G16H40/40 ,  G16H40/63

    摘要： An emergency medical device (20) (e.g., an external defibrillator/monitor) employing an emergency medical subsystem (21) for executing an emergency medical procedure (e.g., a monitoring subsystem (21) and a therapy subsystem (21)), and an emergency medical controller (23) for controlling an activation of the emergency medical subsystem (21). The subsystem (21) includes one or more operational components (22). In operation, the controller (23) conditionally actuates a device readiness indicator (24) (e.g., auditory or visual) indicative of an operational readiness of the operational component(s) (22), and conditionally actuates a failure warning indicator (25) (e.g., auditory or visual) indicative of a pending failure of the operational readiness of the operational component(s) (22). The failure warning indicator (25) may be actuated based on a predictive failure analysis of a premature degradation of the operational component(s) (22), a repeated occurrence of error conditions of the operational component(s) (22) (particularly recoverable error conditions), and a shortened reliable life of the operational component(s) (22).