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    • 2. 发明授权
    • Liquid level measurement system for analog and digital readout
    • 用于模拟和数字读出的液位测量系统
    • US4857894A
    • 1989-08-15
    • US213032
    • 1988-06-27
    • Ernest A. Dahl
    • Ernest A. Dahl
    • G08B21/18
    • G08B21/182
    • An elongated level sensor system has an optical prism formation moulded orut in a side, and includes a plurality of LED light sources and corresponding photocells positioned along its length. Light from the LED sources are reflected off the prism surfaces to respective photocells when there is no liquid present in the area, thereby indicating "no liquid media present." When liquid surrounds a particular section, light from the LED is not reflected from the prism surfaces, but is refracted out; the change in photocell voltage then indicates the presence of liquid media. The system can be used in a plurality of liquid storage areas, and read out simultaneously at a remote sensor/alarm panel.
    • 细长水平传感器系统具有在侧面模制或切割的光学棱镜形成,并且包括沿其长度定位的多个LED光源和相应的光电管。 当该区域中不存在液体时,来自LED源的光从棱镜表面反射到各个光电池,从而表示“不存在液体介质”。 当液体包围特定部分时,来自LED的光不会从棱镜表面反射,而是折射出来; 光电池电压的变化则表示存在液体介质。 该系统可用于多个液体存储区域,并在远程传感器/报警面板同时读出。
    • 3. 发明授权
    • Magnetically operated electrolyte circulation system
    • 磁电解液循环系统
    • US4565748A
    • 1986-01-21
    • US696968
    • 1985-01-31
    • Ernest A. Dahl
    • Ernest A. Dahl
    • F04D33/00H01M2/38
    • H01M2/38F04D33/00Y10S204/05
    • The invention consists of an electromagnetic-field pump. Electrolyte which is an electromagnetic conductor can be stirred and pumped by forcing a field through the electrolyte to magnetically charge the electrolyte and making use of magnetic force exerted on the charged electrolyte by a magnetic field to move the electrolyte. There are no moving parts in the device, only the changing magnetic fields. The magnetic pump assembly is submerged in an electrolyte and consists of an open ended tubular nonmagnetic chamber through which the electrolyte is forced to move in response to changing magnetic fields from external coils which are positioned about the exterior of the tubular chamber and operated to sequentially change in phase.
    • 本发明由电磁场泵组成。 作为电磁导体的电解质可以通过迫使场通过电解质来磁化地充电电解质并利用通过磁场施加在带电电解质上的磁力来移动电解质来进行搅拌和泵送。 设备中没有移动部件,只有磁场变化。 磁性泵组件浸没在电解质中并由开口的管状非磁性室组成,电解液通过该电磁室响应来自外部线圈的变化的磁场而被迫移动,外部线圈围绕管状室的外部定位并且被操作以依次改变 在同一时期。
    • 4. 发明授权
    • Compact storage files
    • 紧凑型存储文件
    • US4832195A
    • 1989-05-23
    • US189064
    • 1988-05-02
    • Ernest A. Dahl
    • Ernest A. Dahl
    • G11B23/023
    • G11B23/0236
    • A compact storage file for box-like objects such as the IBM 3480 magnetic tape cartridge. The basic file unit comprises a U-shaped frame of a flat back wall and integral side walls with a plurality of shelves therein. The construction of the basic unit enables it to be replicated and arranged in many different multiples of the basic unit for efficient use of space in large or complex computer facilities. The shelves in the units are vertically spaced close together for the compact storage of the cartridges and arranged to provide for convenient hand removal of the cartridges from the file. Only the shelves of the storage file units are provided with cartridge separating walls which are constructed and arranged so that a grasped group of the IBM 3480 cartridges are easily quickly inserted as a group in any open area of the file unit.
    • 用于盒式对象(如IBM 3480磁带盒)的紧凑型存储文件。 该基本文件单元包括一个扁平后壁的U形框架和其中具有多个搁架的整体侧壁。 基本单元的构造使其能够复制和布置在基本单元的许多不同倍数中,以有效利用大型或复杂计算机设施中的空间。 单元中的搁板靠近在一起,用于紧凑的存储盒,并且布置成提供方便的手从文件中移除墨盒。 只有存储文件单元的架子上设置有盒式隔离墙,这些盒式隔离墙被构造和布置,使得被夹持的IBM 3480盒式磁带的组被容易地快速地插入文件单元的任何开放区域中。
    • 5. 发明授权
    • Storage and security system for cassette-like objects
    • 盒式物体的存储和安全系统
    • US4643496A
    • 1987-02-17
    • US794138
    • 1985-11-01
    • Ernest A. Dahl
    • Ernest A. Dahl
    • A47B49/00G11B23/023A47B88/18
    • G11B23/0236A47B49/00
    • A cabinet arrangement for the storage and use of cassette-like objects such as microfilm boxes or data tape cartridges with the cabinet in one form intended to be placed upon a table adjacent a person's work station, and in another stacked form intended to be used from a floor position. The cabinet arrangement comprises a plurality of open-faced boxes individually rotatively mounted on a swivel base assembly. The boxes can be aligned in any combination of the open-faced sides facing outwardly for access to the microfilm boxes or inwardly for prevented access to the cassette-like objects. A number of constructions are shown for fixing the boxes against rotation in any such combination.
    • 用于存储和使用诸如微缩胶片盒或数据磁带盒之类的盒式物体的橱柜装置,其中机柜的一种形式旨在放置在与人的工作站相邻的桌子上,并且以另一堆叠形式用于从 一个楼层的位置。 橱柜装置包括多个可旋转地安装在旋转底座组件上的敞开式箱体。 这些盒子可以面向外的开放面侧的任意组合对齐,以便进入微缩胶片盒或向内以防止进入盒状物体。 示出了许多结构,用于固定盒子以任何这样的组合旋转。
    • 9. 发明授权
    • Battery monitoring system
    • 电池监控系统
    • US4217645A
    • 1980-08-12
    • US33286
    • 1979-04-25
    • George H. BarryErnest A. Dahl
    • George H. BarryErnest A. Dahl
    • G01R31/36G08B19/00
    • G01R31/3648G01R31/3668G01R31/3675
    • A system for automatically monitoring a plurality of parameters of a plurality of cells in a lead-acid storage battery system. A transponder means responsive to a frequency pattern corresponding to a digital command is located at each cell to be monitored and includes a plurality of sensors which provide analog signals having an amplitude related to the value of the parameters being monitored. In a remote scanner/display means, a microprocessor generates a digital interrogation command (containing a transponder address, sensor selection, and reply duration commands) which is converted to a frequency pattern and coupled to the transponder. In response to the command, the transponder couples the analog signal from the selected sensor to a voltage-controlled oscillator and the output of the oscillator is coupled for the selected reply duration to the scanner/display means where the frequency of the signal is determined under the control of the processor. The information is stored and averaged within the microprocessor and may be displayed upon operator request and an alarm provided if any parameter of any cell exceeds specified limits.
    • 一种用于自动监测铅蓄电池系统中的多个电池的多个参数的系统。 响应于与数字命令相对应的频率模式的应答器装置位于要监视的每个小区处,并且包括多个传感器,其提供具有与所监视参数的值相关的振幅的模拟信号。 在远程扫描器/显示装置中,微处理器产生数字询问命令(包含转发器地址,传感器选择和应答持续时间命令),其被转换成频率模式并耦合到应答器。 响应于该命令,应答器将来自所选择的传感器的模拟信号耦合到压控振荡器,并且将振荡器的输出耦合到所选择的应答持续时间到扫描器/显示装置,其中确定信号的频率 处理器的控制。 信息在微处理器内存储和平均,并且可以根据操作者请求显示,并且如果任何单元的任何参数超过指定的限制,则提供警报。
    • 10. 发明授权
    • Fire detector
    • 火灾探测器
    • US5568130A
    • 1996-10-22
    • US312946
    • 1994-09-30
    • Ernest A. Dahl
    • Ernest A. Dahl
    • G08B17/103G08B17/10
    • G08B17/103G08B17/113
    • An apparatus for detecting fire including a light source for generating light, a light sensor for receiving light from the light source and providing an analog signal representing the intensity of the received light, and a clear plastic light guide for transmitting the light from the light source to the sensor. The light guide include notches for allowing smoke to enter the notches. Smoke entering the notches decreases the intensity of the light passing therethrough. A calibration sensor is included. The sensitivity of the fire detector is increased by a lens assembly which collimates the light generated by the light source. The color of smoke entering the light guide may be determined by generating colored light. Temperature, humidity and carbon monoxide levels are also detected and the information is integrated with the smoke detection data to provide a reliable fire detector.
    • 一种用于检测火的装置,包括用于产生光的光源,用于接收来自光源的光并提供表示所接收的光的强度的模拟信号的光传感器,以及透明塑料光导,用于将来自光源的光 到传感器。 导光板包括允许烟雾进入凹口的凹口。 进入凹口的烟减少了通过其中的光的强度。 包括校准传感器。 通过对由光源产生的光进行准直的透镜组件来增加火灾探测器的灵敏度。 进入光导的烟雾的颜色可以通过产生彩色光来确定。 还检测到温度,湿度和一氧化碳水平,并将信息与烟雾检测数据集成,以提供可靠的火灾探测器。