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公开(公告)号：US4822996A
公开(公告)日：1989-04-18
申请号：US205608
申请日：1988-06-03
申请人： LeRoy Lind
发明人： LeRoy Lind
IPC分类号： F25C5/18 , G01F23/292 , G05D9/12 , G01V9/04
CPC分类号： F25C5/187 , G01F23/2921 , G05D9/12
摘要： A circuit for controlling an automatic ice making system of a refrigeration apparatus. The device includes an electrical circuit which operates the ice making machine using a light interrupter system. A plused light source is placed such that it will be interfered when the ice has reached a predetermined level in the ice containing bin. The circuit uses operational amplifier signal processing components which activate the ice making machine once the light source is sensed for a predetermined period of time and deactivates the ice maker when the light source is not sensed for another predetermined period of time. The circuit also includes means for eliminating the effect of ambient lights.
摘要翻译： 一种用于控制制冷装置的自动制冰系统的电路。 该装置包括使用光断续器系统操作制冰机的电路。 沉没的光源被放置成使得当冰已经在冰容器箱中达到预定水平时被干扰。 该电路使用运算放大器信号处理组件，一旦光源被感测到预定的时间段，激活制冰机，并且当光源未被感测到另一个预定的时间段时，使制冰机无效。 该电路还包括用于消除环境光的影响的装置。
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公开(公告)号：US4805672A
公开(公告)日：1989-02-21
申请号：US929966
申请日：1986-11-12
摘要： A fixed fluid control system for loading fluids into sealed tanks includes pressure sensing conduits in a mobile vehicle and fixed fluid controls. In the vehicle are first and second pressure sensing conduits having portions within the sealed tank positioned at the top and bottom of the tank. The pressure sensing conduits have exterior portions to which are detachably coupled additional pressure sense lines. The additional pressure sensing conduits are coupled to a differential pressure to current converter within the fixed fluid control system. The converter produces a current signal proportional to the pressure difference between the two sense lines. When this current reaches a predetermined high level, the supply of fluid to the sealed tank is discontinued.
摘要翻译： 用于将流体加载到密封罐中的固定流体控制系统包括移动车辆中的压力传感管道和固定流体控制器。 在车辆中，第一和第二压力传感管道具有位于罐顶部和底部的密封罐内的部分。 压力传感导管具有外部部分，可拆卸地连接附加的压力感测线。 额外的压力感测导管连接到固定流体控制系统内的差压到电流转换器。 转换器产生与两条感测线之间的压差成比例的电流信号。 当该电流达到预定的高电平时，中断向密封容器供应流体。
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公开(公告)号：US4804936A
公开(公告)日：1989-02-14
申请号：US29785
申请日：1987-03-25
申请人： Ronald G. S. Sale
发明人： Ronald G. S. Sale
CPC分类号： G01F23/241 , G01N27/07 , G05D9/12
摘要： A highly reliable bilge pump control system which distinguishes between oil and water and operates without a mechanical float switch. It uses a conductivity type probe of special construction which is unaffected by sludge and contamination at the oil-water interface. Multiple probes at varying depths feed high impedance operational amplifiers which operate a conventional pump through digital circuitry which assures that no oil is pumped from the bilge.
摘要翻译： 一种高度可靠的舱底泵控制系统，用于区分油和水，并在没有机械浮子开关的情况下运行。 它采用特殊结构的导电型探头，不受油水界面污泥和污染的影响。 在不同深度的多个探头馈送高阻抗运算放大器，其通过数字电路操作常规泵，其确保没有油从舱底泵送。
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104.发明授权
公开(公告)号：US4788861A
公开(公告)日：1988-12-06
申请号：US8756
申请日：1987-01-30
申请人： Reiner Lichti
发明人： Reiner Lichti
CPC分类号： G05D9/12 , B41J2/17566 , G01D5/16 , B41J2002/17579
摘要： Apparatus for monitoring supply of electrically conductive writing fluid in a reservoir for an ink printing device which has three electrodes with one pair of the electrodes mounted in a region of the reservoir which is constantly moistened by the writing fluid and provides a first signal which produces a fluid comparison resistance. An additional electrode together with one of the pair of electrodes produces a signal which indicates the change of resistance as a function of the fluid level of the fluid. A control electronics component receives the first and second signals and supplies an output to a shutoff device. A generator and an inverter which receives an input from the generator supply pulses to two of the electrodes.
摘要翻译： 一种用于监测用于油墨印刷装置的储存器中导电书写液供应的装置，其具有三个电极，其中一对电极安装在储存器的不断被书写液体润湿的区域中，并提供产生 流体比较电阻。 附加电极与一对电极中的一个电极一起产生指示作为流体的液位的函数的电阻变化的信号。 控制电子部件接收第一和第二信号，并将输出提供给切断装置。 从发生器接收输入的发电机和逆变器将两个电极脉冲。
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公开(公告)号：US4771804A
公开(公告)日：1988-09-20
申请号：US62986
申请日：1987-06-17
申请人： Julio A. Morales
发明人： Julio A. Morales
CPC分类号： G01F23/62 , F16K21/185 , G05D9/12 , Y10T137/7368 , Y10T137/7423 , Y10T137/8342 , Y10T307/779
摘要： A liquid level sensor and controlling assembly disposed and mounted in direct communication with a reservoir of liquid to be monitored and including a float structure connected to an elongated stem formed of magnetic material which is disposed to selectively move, in accordance with the movement of the upper surface level of the liquid between a primary coil and a secondary coil. A constant voltage supplied to the primary coil results in a magnetic flux and a voltage being induced into the secondary coil based upon position of the magnetic material stem relative to the secondary coil thereby determining that the induced voltage in the secondary coil is directly related to the level of the liquid since the position of the magnetic stem within the secondary coil is controlled by the level of liquid within the reservoir. A control circuit or electrical facility could be activated or controlled by the induced voltage which in turn could operate a supplementary device such as a liquid fill valve in order to fill the reservoir with additional liquid when needed.
摘要翻译： 液位传感器和控制组件，其布置和安装成与待监视的液体的容器直接连通，并且包括连接到由磁性材料形成的细长杆的浮动结构，该浮动结构被设置为根据上部的 初级线圈和次级线圈之间的液体的表面水平。 提供给初级线圈的恒定电压导致磁通量和基于磁性材料杆相对于次级线圈的位置而被感应到次级线圈中的电压，从而确定次级线圈中的感应电压与 由于磁力杆位于次级线圈内的位置由储存器内液体的液位控制，因此液体的液位。 控制电路或电气设备可以被感应电压激活或控制，感应电压又可以操作补充装置，例如液体填充阀，以便在需要时用附加液体填充储存器。
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公开(公告)号：US4649898A
公开(公告)日：1987-03-17
申请号：US586251
申请日：1984-03-05
申请人： Edward D. Martinson
发明人： Edward D. Martinson
CPC分类号： G05D9/12 , A23L3/10 , A47J27/16 , A47J27/62 , G01F23/74 , Y10T137/7368 , Y10T137/8342
摘要： Apparatus is provided for controlling the level of steam condensate in a steam retort wherein sealed cans of food are exposed to incoming steam. The apparatus comprises a pneumatically actuated condensate drain valve which is controlled by a solenoid valve and opens to drain condensate if it reaches a dangerously high level, an alarm to indicate when the high level is reached, a recorder to provide a continuous permanent record of condensate level and drain valve status, and an electric control system for sensing condensate level and operating the solenoid valve, the alarm and the recorder in accordance therewith. The electric control system includes a condensate level sensor in the form of a one or more float-operated magnetically-responsive reed switches mounted in the retort. The sensor comprises a hollow stem in which a reed switch is potted in elastomeric non-displaceable material. In one embodiment the control system employs two reed switches and two relays and the drain valve opens when the condensate reaches an upper level and closes when it reaches a lower level. In another embodiment the control system employs one reed switch and a time-delay relay to prevent the drain valve from opening unless the condensate level remains high for a certain length of time. The apparatus is fail-safe in that the drain valve opens if its pneumatic or electric power supplies fail. A thermocouple may be mounted in the sensor to provide temperature indications to the recorder.
摘要翻译： 提供了用于控制蒸汽蒸馏器中的蒸汽冷凝物水平的装置，其中密封的食物罐暴露于进入的蒸汽。 该装置包括气动致冷的冷凝水排放阀，其由电磁阀控制，并且如果达到危险的高水平时开放以排出冷凝物，则指示何时达到高水位的报警器，提供冷凝物的连续永久记录的记录器 电平和排水阀状态，以及用于感测冷凝水平的电气控制系统，并根据其操作电磁阀，报警器和记录器。 电气控制系统包括安装在蒸馏器中的一个或多个浮动操作的磁响应式舌簧开关形式的冷凝水位传感器。 该传感器包括一个中空杆，其中一个舌簧开关装在弹性不可移动的材料中。 在一个实施例中，控制系统采用两个簧片开关和两个继电器，并且当冷凝水达到较高水平时，排水阀打开，当其达到较低水平时关闭。 在另一个实施例中，控制系统采用一个簧片开关和延时继电器来防止排放阀打开，除非冷凝水水平保持高达一段时间。 该设备是故障安全的，因为如果排气阀的气动或电源出现故障，则排液阀打开。 热电偶可以安装在传感器中，以向记录器提供温度指示。
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公开(公告)号：US4637424A
公开(公告)日：1987-01-20
申请号：US738015
申请日：1985-05-23
CPC分类号： G01F23/242 , G05D9/12 , Y10T137/7306
摘要： A probeless fluid level detector and controller is disclosed for use in monitoring and controlling the level of a conductive fluid within a container. The detector includes a multiple pin terminal strip intrusively mounted into the container. The strip is sealed to the container by a mixture of epoxy and container filings. The strip is electrically connected to a controller which controls the level of the container.
摘要翻译： 公开了一种用于监测和控制容器内的导电流体的水平的无水液位检测器和控制器。 检测器包括一个固定在容器中的多针端子排。 带材通过环氧树脂和容器填料的混合物密封到容器。 条带电连接到控制容器的水平的控制器。
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公开(公告)号：US4604681A
公开(公告)日：1986-08-05
申请号：US765189
申请日：1985-08-13
申请人： Ryuji Sakashita
发明人： Ryuji Sakashita
摘要： An automatic feedback controller for maintaining water level in a dam initially compares target and sensed water levels to derive a deviation value. Simultaneously, a first dead zone having a relatively wide width contiguous to the target level is set. The first set dead zone is compared with the deviation value to open and close a dam gate such that the deviation value becomes smaller than the first dead zone width. When a predetermined time has elapsed, a second dead zone having a width narrower than that of the first dead zone is set. The second dead zone is then compared with the deviation value to open or close the gate such that the deviation value becomes smaller than the second dead zone width.
摘要翻译： 用于维持大坝水位的自动反馈控制器最初比较目标值和感测水位以导出偏差值。 同时，设置与目标水平相邻的相对宽的宽度的第一死区。 将第一设定死区与偏差值进行比较，以打开和关闭闸门，使得偏差值变得小于第一死区宽度。 当经过预定时间时，设置宽度比第一死区窄的第二死区。 然后将第二死区与偏差值进行比较以打开或关闭门，使得偏差值变得小于第二死区宽度。
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公开(公告)号：US4574849A
公开(公告)日：1986-03-11
申请号：US589698
申请日：1984-03-15
申请人： Masao Fukuda
发明人： Masao Fukuda
摘要： An apparatus and method which control the supply of a product to a pooling unit. A sensor is provided for sensing whether the product has been supplied to a preset level of the pooling unit. The method comprises sensing whether the product has been supplied to the preset level of the pooling unit. A first time period is measured until the preset level is attained once supply of the product has begun. A second time period is calculated and measured based on the first time period, during which the product continues to be supplied to the pooling unit. The supply of the product to the pooling unit is then halted in response to expiration of the second time period. Control is effected such that the overall amount of the product supplied is substantially constant irrespective of any variation in the amount of the product supplied to the pooling unit per unit time.
摘要翻译： 一种控制向集中单元供应产品的装置和方法。 提供了一种传感器，用于检测产品是否已经被提供到汇集单元的预设级别。 该方法包括检测产品是否被提供给汇集单元的预设级别。 测量第一个时间段，直到产品的供应开始后达到预设水平。 基于第一时间段计算和测量第二时间段，在该时间段期间产品继续被提供给汇集单元。 然后，响应于第二时间段的到期，停止向集中单元供应产品。 进行控制，使得供应的产品的总量基本上恒定，而不管每单位时间内供应给汇集单元的产品的量的任何变化。
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公开(公告)号：US4562858A
公开(公告)日：1986-01-07
申请号：US479161
申请日：1983-03-28
CPC分类号： G05D9/12 , Y10T137/7306 , Y10T307/779
摘要： A stepper for use between a transducer subjected to variable pressure, heat or liquid level for converting the continuous output signal of the transducer with all of its variations, both of significant magnitude and those of insignificant importance, into a continuous stepped output signal that increases or decreases the current to a transducer responsive control unit, particularly a servo amplifier, which stepped signal eliminates all minor and unimportant fluctuations from the output current from the transducer. The stepper also includes a sequence of voltage regulators such as potentiometers in the circuits between the stepper and the servo amplifier by means of which the magnitude of the current flow of each step to the servo amplifier may be adjusted or programmed with respect to one another. It is particularly useful in the regulation of flow control valves in water distribution and sewage disposal systems, but its application to steam boilers is also disclosed and described.
摘要翻译： 用于在经受可变压力，热或液位之间的换能器之间使用的步进器，用于将所述换能器的连续输出信号与其所有的变化（具有显着的大小和不重要的变化）转换成增加的连续的阶梯式输出信号 将电流减小到传感器响应控制单元，特别是伺服放大器，该阶梯式信号消除了来自换能器的输出电流的所有微小和不重要的波动。 步进电路还包括一系列电压调节器，例如步进电机和伺服放大器之间的电路中的电位计，通过该电压调节器可以相对于彼此调节或编程到伺服放大器的每个步骤的电流的大小。 它在配水和污水处理系统中的流量控制阀的调节中特别有用，但也适用于蒸汽锅炉。
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