Dual computer system with signal exchange system
    11.
    发明授权
    Dual computer system with signal exchange system 失效
    具有信号交换系统的双计算机系统

    公开(公告)号:US3864670A

    公开(公告)日:1975-02-04

    申请号:US33485773

    申请日:1973-02-22

    摘要: A dual computer system of the type comprising two simultaneously operating central processors is disclosed. The two central processors are connected to each other for processing a breakdown cycle by way of an memory bus exchanger (MBEX) for switching connections between two memory buses, a data bus exchanger (DBEX) for switching connections between the input/output signal lines of the two central processors (CP) and the data bus line, and a dual control unit (DCU) for monitoring the two central processors and controlling the MBEX and the DBEX and thus integrally controlling the dual system. The dual computer system operates through a breakdown cycle utilizing the following four modes: 1. Dual Mode: In this mode the two CP''s are fully sychronized and the output signals of the two CP''s or the outputs of registers or the like are monitored through a check circuit located in the DCU. One of the CP''s is responsible for input/output operations and the other CP remains a standby. 2. Abnormal Mode: This mode results when a discoincidence is detected in the outputs being monitored by the DCU. The input/output operations of the CP''s are halted by the DBEX until the failed CP is identified and isolated from the system. 3. Single Mode: In this mode only the normal CP is in operation. The normal CP reads the memory of the failed one through the MBEX for use in diagnosing the failure, and the failed CP is repaired. 4. Preparation Mode: In this mode the memory and register contents of the repaired CP are equalized through the MBEX with those of the normally functioning CP, and the two CP''s are synchronized to allow the system to be returned to the dual mode. In the event of failure of one of the CP''s, the normal CP assumes the single mode of operation immediately after a short halt of system operation in the abnormal mode. The failed CP is repaired, the memory and register contents of the failed CP are equalized with those of the other CP remaining on-line, and thus the dual mode is restored without substantially disturbing the flow of system operation. This enhances system reliability.

    摘要翻译: 公开了包括两个同时操作的中央处理器的双计算机系统。 两个中央处理器彼此连接,通过用于切换两个存储器总线之间的连接的存储器总线交换机(MBEX)来处理故障周期,数据总线交换机(DBEX)用于切换输入/输出信号线 两个中央处理器(CP)和数据总线,以及一个双控制单元(DCU),用于监控两个中央处理器并控制MBEX和DBEX,从而整体控制双系统。

    Flow velocity measuring device
    12.
    发明授权
    Flow velocity measuring device 失效
    流速测量装置

    公开(公告)号:US3863500A

    公开(公告)日:1975-02-04

    申请号:US34812173

    申请日:1973-04-05

    摘要: Flow metering apparatus of the type wherein a vortex generating element having a generally elongate cylindrical shape is placed transversely in the stream of flowing fluid to produce on opposite sides of the element vortices which are shed in alternating fashion, and of the type wherein the element is formed with openings at said opposite sides which are connected together through the interior of said element to produce therethrough an alternating fluid flow corresponding to the alternating shedding of vortices. To improve the correspondence of vortex production rate with flow velocity over conditions of turbulent flow, the element has the openings on opposite sides thereof arranged both in an upstream region, and in a downstream region circumferentially spaced from the upstream region. Fluid flowing into the openings on one side of the element serves to maintain the boundary layer attached to the element to the vicinity of the downstream region to aid vortex formation. Fluid flowing outwardly from the openings on the opposite side of the element assists in separating the boundary layer and in preventing it from reattaching to the element in the vicinity of the downstream region.

    摘要翻译: 这种类型的流量计量装置,其中具有大致细长的圆柱形形状的涡流产生元件横向地放置在流动流体流中以在交替的方式排出的元件涡流的相对侧上产生,并且其中元件是 在所述相对侧上形成有开口,所述开口通过所述元件的内部连接在一起,以产生与涡流的交替脱落相对应的交替流体流。 为了提高涡流生成速度与湍流条件下的流速的对应关系,元件在其上游区域和与上游区域周向间隔开的下游区域中的相对侧上具有开口。 流入元件一侧的开口的流体用于将附着在该元件上的边界层保持在下游区域附近以有助于形成涡流。 从元件的相对侧的开口向外流动的流体有助于分离边界层并防止其重新附着在下游区域附近的元件。

    Barrier isolator device employing an overload protection circuit

    公开(公告)号:US3818273A

    公开(公告)日:1974-06-18

    申请号:US32537673

    申请日:1973-01-22

    发明人: NAKASHIMA T OHTA S

    IPC分类号: H02H9/00 H02H3/38

    CPC分类号: H02H9/008

    摘要: A barrier isolator device is disclosed for interconnecting a voltage source in a safe area, a load (such as a sensing element) in a hazardous area, and a load-associated device (such as a recorder) in a safe area. The barrier isolator device includes an overload protection circuit arranged to transmit signals between the load and the load-associated device, a first isolating circuit connecting the voltage source with the overload protection circuit, and a second isolating circuit connecting the load-associated device with the overload protection circuit. The protective circuit is characterized by low voltage losses in normal operation, low power consumption in a fault condition, and automatic resetting. The protective circuit comprises a current control means, such as a transistor, in series with the load and controlling the current flowing through the load by varying its conductivity. A current detection means, such as a low valued resistor, is connected in series with the load to detect the predetermined limiting value of current, and a voltage detection means, such as a resistive voltage divider, is connected parallel to the voltage source for detecting the predetermined limiting value of voltage. The current control means is arranged to be responsive to the current and voltage detection means to react to either a current or voltage overload condition by reducing its conductivity to limit current flow through, and voltage across, the load. Under normal conditions the current control means inserts a conducting transistor''s collector-emitter circuit in series with the load, and the current detecting means inserts a low valued resistor in series with the load, and hence the overload protection circuit introduces only a small series voltage loss. The voltage detecting means places large valued resistors in parallel with the voltage source, and any bias voltages provided to the current control means by the voltage source can be supplied through similar large valued resistors, and hence there is little power consumption during a voltage overload condition. The current control means and the voltage and current detection means are arranged to automatically restore themselves when overload conditions vanish. Accordingly, the overload protection circuit is highly suitable for use in intrinsically safe circuitry arranged to prevent excess energy from entering a hazardous environment, such as an explosive environment.

    Depressor bar type recording apparatus
    14.
    发明授权
    Depressor bar type recording apparatus 失效
    DEPRESSOR棒式录音机

    公开(公告)号:US3761949A

    公开(公告)日:1973-09-25

    申请号:US3761949D

    申请日:1972-07-24

    发明人: HASEBE T TAKIZAWA A

    IPC分类号: G01D15/16

    CPC分类号: G01D15/16

    摘要: A depressor bar type chart recording apparatus of the type having a dotting apparatus axially slidable on a rotating drive shaft and being activated by the rotating drive shaft to sequentially impress different colored ink dots upon the chart at selected axial locations. The dotting apparatus has a slide tube rotating with the drive shaft and carrying a dotting cam and a sequencing cam. The frame for the dotting apparatus includes a sliding portion coupled to the slide tube for axial motion therewith, and a swinging portion pivoted to the sliding portion and having a cam follower engaging the dotting cam for causing the swinging portion to be pivoted. A dotting shaft is carried by the swinging portion of the frame, and has at one end a dotting wheel with circumferentially spaced dotting needles brought into contact with the chart as the frame swings, and at the other end sequencing means engaging the sequencing cam and intermittently rotating the dotting needles into position for contacting the chart. A plate is pivotally mounted on the swinging frame portion, and carries an inkpad shell which is rotated along with the dotting shaft and is brought into contact with the dotting wheels as the plate moves inertially upon movement of the swinging frame portion.

    摘要翻译: 一种压杆式图表记录装置,其具有可在旋转驱动轴上可轴向滑动并由旋转驱动轴启动的点样装置,以便在所选择的轴向位置上顺序地将不同颜色的墨点印在图表上。 点焊装置具有与驱动轴一起旋转的滑动管,并带有点状凸轮和排序凸轮。 点缀装置的框架包括与滑动管连接的滑动部分,用于与其一起轴向运动,以及摆动部分,其枢转到滑动部分,并具有与点状凸轮接合以使摆动部分枢转的凸轮从动件。 点状轴由框架的摆动部分承载,并且在一端具有点划轮,当框架摆动时,带有周向间隔开的点针与图表接触,并且在另一端,排序装置接合排序凸轮并间歇地 将点针旋转到与图表接触的位置。 板被可枢转地安装在摆动框架部分上,并带有随着点状轴一起旋转的墨盒壳体,并且随着摆动框架部分移动时板块惯性地移动而与点划线轮接触。

    Closed loop stepping motor servo mechanism
    15.
    发明授权
    Closed loop stepping motor servo mechanism 失效
    闭环循环电机伺服机构

    公开(公告)号:US3742328A

    公开(公告)日:1973-06-26

    申请号:US3742328D

    申请日:1971-04-28

    发明人: OHTA S

    CPC分类号: G05D3/183

    摘要: A servo - mechanism utilizing a pulse motor comprises a comparator amplifier for producing an output corresponding to the difference between an input signal voltage and a feedback voltage, a signal conversion circuit for converting the output from the comparator amplifier into two bit level signals, and a pulse motor driving circuit for controlling the direction of the pulse motor in accordance with one of the two bit level signals and for controlling the start and stop of the pulse motor in accordance with the other of the two bit level signals.

    Pulse transmitting apparatus
    16.
    发明授权
    Pulse transmitting apparatus 失效
    脉冲发射装置

    公开(公告)号:US3718762A

    公开(公告)日:1973-02-27

    申请号:US3718762D

    申请日:1970-07-16

    摘要: A pulse transmitting apparatus comprising a first transmission line connected to a current drive circuit at one end, a second transmission line stranded with the first and having an end connected to a receiver circuit located adjacent the drive circuit, and a pair of serial connected switches at the transmitting end of the apparatus for connecting together the other ends of the first and second transmission lines and sending a current pulse signal to the receiver circuit. The switches are operated simultaneously in response to an input signal and the apparatus contains means for absorbing pulses reflected back from the receiving end to the transmitting end of the apparatus.

    摘要翻译: 一种脉冲发送装置,包括在一端连接到电流驱动电路的第一传输线,与第一传输线相连的第二传输线,并且具有连接到位于驱动电路附近的接收器电路的端部,以及一对串联连接的开关, 用于连接第一和第二传输线的另一端并将电流脉冲信号发送到接收器电路的装置的发送端。 开关响应于输入信号同时工作,并且该装置包含用于吸收从接收端反射回设备发射端的脉冲的装置。

    Apparatus for measuring ph
    17.
    发明授权
    Apparatus for measuring ph 失效
    用于测量PH的装置

    公开(公告)号:US3677925A

    公开(公告)日:1972-07-18

    申请号:US3677925D

    申请日:1970-07-22

    IPC分类号: G01N27/36

    CPC分类号: G01N27/36

    摘要: A GLASS ELECTRODE HAVING SUPPORT TUBE MEANS, AN INNER ELECTRODE DISPOSED THEREIN, A CAP FORMED OF AN INSULATING MATERIAL AND FIXED ON THE TOP OF THE SUPPORT TUBE MEANS, A GLASS ELECTRODE TERMINAL PROVIDED ON THE CAP AND CONNECTED WITH THE INNER ELECTRODE, A GUARD RING FIXED ON THE PERIPHERY OF THE CAP AND A GUARD RING TERMINAL, IN WHICH A NEGATIVE FEEDBACK VOLTAGE FROM A NEGATIVE FEEDBACK AMPLIFIER IS IMPRESSED TO THE GUARD TERMINAL, THE NEGATIVE FEEDBACK AMPLIFIER AMPLIFYING A SIGNAL DERIVED AT THE GLASS ELECTRODE TERMINAL.

    D R A W I N G

    Method and apparatus for measuring the moisture content of paper
    20.
    发明授权
    Method and apparatus for measuring the moisture content of paper 失效
    测量纸张含水量的方法和装置

    公开(公告)号:US4345150A

    公开(公告)日:1982-08-17

    申请号:US148808

    申请日:1980-05-12

    CPC分类号: G01N21/86 G01N21/314

    摘要: Method and apparatus for generating signals corresponding to the moisture content of paper by irradiating a sheet of paper with a near infrared ray, by detecting a beam having a coaction with the paper and by accomplishing the desired arithmetic operations with the use of the detected signals. According to the method and apparatus, at least two optical systems having different degrees of coactions with the paper are provided to respectively detect photometric optical signals and reference optical signals so that the signals corresponding to the moisture content may be generated with the use of the photometric and reference optical signals.

    摘要翻译: 用于通过用与近红外线照射一张纸来产生与纸的水分含量相对应的信号的方法和装置,通过检测与该纸的共同作用的光束,并通过使用所检测的信号来完成所需的算术运算。 根据该方法和装置,提供与纸张具有不同程度的协同作用的至少两个光学系统以分别检测光度光信号和参考光信号,使得可以使用光度法产生对应于水分含量的信号 和参考光信号。