Method and apparatus for detecting the position of an abnormal site of a
buried pipe
    1.
    发明授权
    Method and apparatus for detecting the position of an abnormal site of a buried pipe 失效
    用于检测埋管异常位置的位置的方法和装置

    公开(公告)号:US5544074A

    公开(公告)日:1996-08-06

    申请号:US378935

    申请日:1995-01-26

    IPC分类号: G01M3/00 G01M3/24 G01F1/66

    CPC分类号: G01M3/005 G01M3/243

    摘要: A device for detecting the position of a physical defect on a buried pipe includes a leak-of-fluid signal detector, a number of vibration signal detectors, and a device body and can detect the position of a site of a leak, into the ground, of a fluid running through a fluid pipe buried beneath the ground surface. The device body calculates vibration amplitudes and speeds via associated vibration signal detectors with the use of the outputs of the respective vibration signal detectors, calculates cross-correlation functions of the vibration amplitudes and speeds with the use of the vibration amplitudes and speeds and the output of the leak-of-fluid signal detector, calculates the amplitude intensity for each cross-correlation function, and generates resultant vector data representing the position of the leak-of-fluid site with the use of the vibration intensity.

    摘要翻译: 用于检测埋管的物理缺陷的位置的装置包括泄漏流体信号检测器,多个振动信号检测器和装置主体,并且可以将泄漏部位的位置检测到地面 流过穿过地下表面的流体管的流体。 装置主体利用相应的振动信号检测器的输出,通过相关联的振动信号检测器来计算振幅和速度,利用振动幅度和速度以及振动幅度和速度的输出来计算振幅和速度的互相关函数 流量泄漏信号检测器计算每个互相关函数的振幅强度,并使用振动强度产生表示流体泄漏点位置的合成矢量数据。

    Data processing system with error processing apparatus and error
processing method
    2.
    发明授权
    Data processing system with error processing apparatus and error processing method 失效
    具有误差处理装置和误差处理方法的数据处理系统

    公开(公告)号:US4456993A

    公开(公告)日:1984-06-26

    申请号:US247297

    申请日:1981-03-30

    摘要: A data processing system for error processing and an error processing method, which system includes a main memory (M), an information processing unit (A), an error processing unit (EP) and an alternate memory. When an error arises in a portion of the main memory, corrected information is stored in the alternate memory. Then, under the control of the error processing unit, the alternate memory is employed instead of the malfunctioning portion of the main memory. The alternate memory is adapted to be used only when the error is a fixed error or a burst error, in order to avoid a system shut-down caused by fixed-and soft-errors or burst-and soft-errors which occur during information processing. The alternate memory, therefore, is not used in a case where the error is a soft error. This imparts an additional advantage in that the size of the memory is reduced.

    摘要翻译: PCT No.PCT / JP80 / 00175 Sec。 371日期1981年3月30日 102(e)1981年3月30日PCT提交1980年7月29日PCT公布。 公开号WO81 / 00481 日期:1981年2月19日。一种用于错误处理的数据处理系统和错误处理方法,该系统包括主存储器(M),信息处理单元(A),错误处理单元(EP)和备用存储器。 当在主存储器的一部分中出现错误时,校正的信息被存储在备用存储器中。 然后,在错误处理单元的控制下,采用备用存储器代替主存储器的故障部分。 备用存储器仅适用于仅当错误是固定错误或突发错误时才使用,以避免在信息处理期间发生的固定和软错误或突发和软错误引起的系统关闭 。 因此,在错误是软错误的情况下,不使用备用存储器。 这提供了另外的优点,即存储器的尺寸减小。

    Lamp circuit with disconnected lamp detecting device
    3.
    发明授权
    Lamp circuit with disconnected lamp detecting device 失效
    灯电路断线检测装置

    公开(公告)号:US5034659A

    公开(公告)日:1991-07-23

    申请号:US559138

    申请日:1990-07-30

    申请人: Shozo Taniguchi

    发明人: Shozo Taniguchi

    IPC分类号: H05B37/03

    CPC分类号: H05B37/038

    摘要: In a series lamp circuit designed to connect lamps to the secondary windings of current transformers connected in series with a constant-current power supply, the series lamp circuit provides a disconnected lamp detecting means and a short-circuit switch for each lamp. The short-circuit switch serves to short-circuit the secondary windings of the transformers in response to the output of the detecting means. By actuating the short-circuit switch, the short-circuit switch is switched off during a short-circuit releasing time defined uniquely for a lamp at each predetermined inspection period. The power device side serves to detect the quantity of disconnected lamps on the basis of the output voltage and current and detect an OFF operating time of the short-circuit switch on the basis of an output voltage waveform of the power supply. Hence, it is possible to identify which lamp is disconnected and display the identified result on a display. An alarm is issued when the disconnected lamp is detected.

    摘要翻译: 在将灯连接到与恒流电源串联连接的电流互感器的次级绕组的串联灯电路中,串联灯电路为每个灯提供断开的灯检测装置和短路开关。 短路开关用于响应于检测装置的输出使变压器的次级绕组短路。 通过启动短路开关,短路开关在每个预定检查周期内为灯具唯一定义的短路释放时间期间关闭。 功率器件侧用于基于输出电压和电流来检测断开的灯的数量,并且基于电源的输出电压波形检测短路开关的截止操作时间。 因此,可以识别哪个灯断开,并将显示的结果显示在显示器上。 检测到断开的灯时发出报警。

    Lamp circuit with disconnected lamp detecting device
    4.
    发明授权
    Lamp circuit with disconnected lamp detecting device 失效
    灯电路断线检测装置

    公开(公告)号:US5099177A

    公开(公告)日:1992-03-24

    申请号:US664749

    申请日:1991-03-05

    IPC分类号: H05B37/03

    CPC分类号: H05B37/038

    摘要: A plurality of current transformers connected in series provide secondary winding sides respectively connected to lamps. A constant-current source is provided to supply constant current to these lamps. Each lamp is connected to the corresponding terminal unit including a short-circuit switch for short-circuiting the secondary winding side of the transformer when the lamp is disconnected. A master station issues a request for detecting a disconnected lamp or checking whether or not failure occurs in the terminal unit to each terminal unit in the form of an instant power interruption. Each terminal unit has a proper identification time assigned thereto. In response to the request issued by the master station in the form of an instant power interruption, after the proper identification time for each terminal unit, the relevant terminal unit serves to turn off a short-circuit switch for opening the secondary winding side of the transformer for a predetermined time or, during the proper identification time, the terminal unit serves to control the short-circuit switch on and off according to a predetermined code to respond to the request issued by the master station. In the master station, the constant-current source reads the information from each terminal unit based on the waveform change of an output current and output voltage of the constant-current source so as to determine whether or not each lamp is disconnected, where the disconnected lamp is located, whether or not each terminal unit fails, and where the failed terminal unit is located.

    摘要翻译: 串联连接的多个电流互感器提供分别连接到灯的次级绕组侧。 提供恒流源以向这些灯提供恒定电流。 每个灯连接到相应的终端单元,包括短路开关,用于当灯断开时使变压器的次级绕组侧短路。 主站发出检测断线灯的请求,或者以即时电源中断的形式检查终端单元到每个终端单元是否发生故障。 每个终端单元具有适当的识别时间。 响应于主站以瞬时电源中断的形式发出的请求,在每个终端单元的适当的识别时间之后,相关的终端单元用于关闭用于打开第二绕组侧的短路开关 变压器预定时间,或者在适当的识别时间期间,终端单元用于根据预定代码来控制短路开关的接通和断开,以响应主站发出的请求。 在主站中,恒流源基于恒定电流源的输出电流和输出电压的波形变化从每个终端单元读取信息,以便确定每个灯是否断开,其中断开 无论每个终端单元是否发生故障,以及故障终端单元所在的位置。

    Lamp circuit with disconnected lamp detecting device
    5.
    发明授权
    Lamp circuit with disconnected lamp detecting device 失效
    灯电路断线检测装置

    公开(公告)号:US4396868A

    公开(公告)日:1983-08-02

    申请号:US238116

    申请日:1981-02-25

    IPC分类号: G01R31/44 H05B37/03 H02K33/00

    摘要: A lamp circuit is provided having a constant current-type AC power source and a plurality of isolation transformers coupled in series with the AC power source. The secondary circuit of each isolation transformer is connected to an electric lamp. The output voltage of the constant current-type AC power source is detected to determine the times when the output voltage crosses the zero voltage level. A disconnected lamp in the circuit results in a distortion of the output voltage waveform due to the magnetic-saturation characteristics of the isolation transformer coupled to the disconnected lamp. The output voltage waveform is integrated over time between the time periods when the output voltage signal crosses the zero axis. The result of the integration is compared with a reference value. When the integrated value exceeds the reference value, an alarm signal is generated. The number of disconnected lamps may also be determined and displayed. The circuit includes a device for supplying a small current to the plurality of isolation transformers such that the status of the lamps in a circuit can be determined without illuminating any of the lamps in the circuit.

    摘要翻译: 提供了具有恒流型AC电源和与AC电源串联耦合的多个隔离变压器的灯电路。 每个隔离变压器的次级电路连接到电灯。 检测恒流型AC电源的输出电压,以确定输出电压跨越零电压电平的时间。 由于耦合到断开的灯的隔离变压器的磁饱和特性,电路中断开的灯导致输出电压波形的失真。 输出电压波形在输出电压信号穿过零轴的时间段之间随时间积分。 将积分的结果与参考值进行比较。 当积分值超过参考值时,产生报警信号。 也可以确定并显示断开的灯的数量。 电路包括用于向多个隔离变压器提供小电流的装置,使得可以确定电路中的灯的状态而不照亮电路中的任何灯。