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公开(公告)号：US4284990A
公开(公告)日：1981-08-18
申请号：US126583
申请日：1980-03-03
CPC分类号： F02P7/061
摘要： A displacement transducer suitable for monitoring the angular rotation of an internal combustion engine is provided. The transducer comprises a rotary disc having a castellated periphery and mounted for rotation with the engine. First and second coils are mounted such that upon operation of the engine the castellations of the disc interrupt the inductive coupling therebetween. The first coil is fed with an oscillatory electrical signal which induces in the second coil an output signal of a first peak amplitude during the interruptions produced by the castellations and of a second peak amplitude during periods between the interruptions. Thresholding circuitry responsive to the output signal produces a control signal which is indicative of the commencement and cessation of the interruptions. In accordance with one disclosed embodiment, the threshold circuitry includes a pair of inverters sharing the same thermal environment. The first inverter is capacitively coupled to receive the output signal from the second coil, and the second inverter, which has its output connected to its input in a feedback arrangement, provides bias through a resistive coupling to the first inverter to compensate for temperature drifts, whereby the first inverter switches output signal states when its input signal passes through a preselected voltage level.
摘要翻译： 提供适于监测内燃机的角度旋转的位移传感器。 换能器包括具有雉形周边并且安装成与发动机一起旋转的旋转盘。 安装第一和第二线圈，使得在发动机操作时，盘的cast disc中断其间的电感耦合。 第一线圈被馈送振荡电信号，该振荡电信号在第二线圈处引起在由中心产生的中断期间的第一峰值幅度的输出信号，以及在中断期间的期间的第二峰值振幅。 响应于输出信号的阈值电路产生指示中断的开始和停止的控制信号。 根据一个公开的实施例，阈值电路包括共享相同热环境的一对逆变器。 第一反相器电容耦合以接收来自第二线圈的输出信号，并且其输出端以反馈装置连接到其输入端的第二反相器通过与第一反相器的电阻耦合提供偏置来补偿温度漂移， 由此第一反相器在其输入信号经过预选的电压电平时切换输出信号状态。
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公开(公告)号：US4014015A
公开(公告)日：1977-03-22
申请号：US574526
申请日：1975-05-05
申请人： Philip M. Gundlach
发明人： Philip M. Gundlach
摘要： A linear position measurement system including a linear member and a relatively movable member. The linear member includes a plurality of serpentine electrical conductors, each representing one bit of a multiple bit Gray code. At any longitudinal position of the movable member, an inductor in the movable member induces oppositely phased signals in those conductors which lie along a first long edge of the linear member and in those which lie along an opposite edge. A phase comparator in a readout device attached to the conductors compares the signals from each conductor with a reference and constructs a unique address code word indicative of the position of the movable member. The inductor in the movable member is activated through a special circuit which is powered by inductive coupling with a coil carried by the linear member.
摘要翻译： 一种液位测量系统，包括垂直线性构件和浮子。 线性构件包括多个电导体，每个电导体表示多位格雷码的一个比特，并且每个包括与浮子相互作用的交替部分，以在指示逻辑“1”或“0”的导体中产生信号。 导体的“1”部分和“0”在浮点的每个位置形成唯一的二进制码字。 附接到导体的读出装置中的相位比较器将来自每个导体的信号与参考值进行比较，并构造指示浮子位置的唯一地址代码字。 延长线性部件的长度的电感器为系统供电，而没有电气引导到浮子。
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公开(公告)号：US3765014A
公开(公告)日：1973-10-09
申请号：US3765014D
申请日：1970-10-12
申请人： SYNER DATA INC
发明人： TAYLOR F
IPC分类号： H03K17/97 , H03K17/972 , H03M11/22 , G08C9/04 , G08C19/28
CPC分类号： H03M11/22 , H03K17/97 , H03K17/972
摘要： Keyboard for converting information to an electrical pulse code, comprising a base in which are mounted gapped magnetic core segments, primary and secondary wiring associated with the core segments and arranged to be magnetically coupled upon effective bridging of the core gaps and individual key modules corresponding to the core segments, each module having a housing independent of the base, a bar movable axially in and biased away from the core segments with respect to the housing, a key cap mounted at one end of the bar, and a magnetic core bridging member actuatable by the bar upon key depression to close the core gap.
摘要翻译： 用于将信息转换为电脉冲代码的键盘，其包括基座，其中安装有间隙的磁芯段，与所述芯段相关联的主配线和次配线，并且布置成在有效桥接所述铁芯间隙和与所述芯间隙对应的各个键模块之间磁耦合 所述芯段，每个模块具有独立于所述底座的壳体，相对于所述壳体轴向移动并偏离所述芯段的杆，安装在所述杆的一端的键帽和可驱动的磁芯桥接构件 通过按键抑制关闭核心差距。
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公开(公告)号：US3585637A
公开(公告)日：1971-06-15
申请号：US3585637D
申请日：1968-06-04
申请人： GEN ELECTRIC
IPC分类号： G06F3/16 , H01H13/84 , H03K17/972 , G08C9/04
CPC分类号： H01H13/84 , G06F3/16 , H03K17/972
摘要： Individual magnetic cores are associated with keys on a keyboard, and two sets of electrical conductors are threaded through the cores in opposite senses to provide code and inverse code signals. Circuit means is provided to detect a change in logic levels caused by simultaneous depression of two or more keys and to produce a data strobe output only when a single key is depressed.
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公开(公告)号：US3568180A
公开(公告)日：1971-03-02
申请号：US3568180D
申请日：1967-11-01
申请人： DIXI SA
发明人： ROSCH EDUARD
摘要： An encoder having a number of output circuits including each a resistor of which the resistance value depends on the magnetic field intensity in it, the field intensity being controlled by a code track associated with each resistor.
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公开(公告)号：US3564557A
公开(公告)日：1971-02-16
申请号：US3564557D
申请日：1968-05-21
申请人： HONEYWELL INC
发明人： RUTHAZER LEONARD B
CPC分类号： G11B20/1426
摘要： A SERIAL CODING ARRANGEMENT FOR BINARY INFORMATION IS DESCRIBED FOLLOWING THE REQUIREMENT THAT AT LEAST EVERY OTHER BIT POSITION CONTAINS A SIGNAL TRANSITION. TO ACHIEVE THIS, A CODING SCHEME IS USED IN WHICH THREE OF THE POSSIBLE CONFIGURATIONS OF TWO BINARY BITS OF INFORMATION ARE ENCODED AS THREE UNIQUE THREE BIT CONFIGURATIONS AND THE FOURTH TWO BIT CONFIGURATION IS ENCODED ALONG WITH THE
FOLLOWING TWO BITS OF BINARY INPUT INFORMATION IN ONE OF FOUR UNIQUE SIX BIT CONFIGURATIONS. THIS COULD BE DESCRIBED AS VARIABLE LENGTH CODING AND IMPLEMENTATION ARRANGEMENTS FOR BOTH THE ENCODING AND DECODING ARE DISCLOSED.-
27.发明授权Apparatus for numerical signaling of positions, including digital-to-analog converter 失效用于数字信号转换器的设备，包括数字到模拟转换器
公开(公告)号：US3553647A
公开(公告)日：1971-01-05
申请号：US3553647D
申请日：1967-04-21
申请人： GIDDINGS & LEWIS
发明人： BULLOCK THOMAS B
摘要： APPARATUS FOR PRODUCING DIGITAL SIGNALS WHICH NUMERICALLY REPRESENT AT ALL TIMES THE POSITION OF A MOVABLE ELEMENT AS IT MOVES TO DIFFERENT POSITIONS ALONG ITS PATH OF TRAVEL. THE DIGITAL SIGNALS IN THR FORM OF BI-LEVEL VOLTAGES ARE PRODUCED IN A MULTIDECADE REVERSIBLE COUNTER TO REPRESENT THE POSITION NUMERICALLY IN BINARY CODED DECIMAL NOTATION. THESE SIGNALS ARE SUPPLIED TO A DIGITAL-TO-ANALOG CONVERTER WHOSE ANALOG OUTPUT, CORRESPONDING TO THE REPRESENTED POSITION, IS SUPPLIED TO A RESOLVER TYPER TRANSDUCER MECHANICALLY COUPLED TO THE ELEMENT. THE TRANSDUCER PRODUCES A DISCREPANCY SIGNAL REPRESENTING THE SENSE AND EXTENT OF ANY DIFFERENCE BETWEEN THE NUMERICALLY REPRESENTED POSITION AND THE ACTUAL POSITION OF THE ELEMENT. SO LONG AS THE DISCREPANCY SIGNAL EXISTS, PULSE PRODUCING MEANS ARE ENABLED TO SUPPLY PULSES TO THE COUNTER SO AS TO CORRECTIVELY CHANGE THE NUMBER SIGNALED BY THE COUNTER UNTIL THE DIFFERENCE AND THE DISCREPANCY SIGNAL ARE REDUCED SUBSTANTIALLY TO ZERO. THE CLOSED LOOP CORRECTION IS VERY RAPID, SO FOR PRACTICAL PURPOSES THE NUMBER DIGITALLY SIGNALED BY THE COUNTER ALWAYS REPRESENTS THE ACTUAL POSITION OF THE MOVABLE ELEMENT.
THE DIGITAL-TO-ANALOG CONVERTER HERE SIDCLOSED IS THE TYPE WHICH PRODUCES SINE AND COSINE FUNCTIUON SIGNALS FOR EXCITATION OF A RESOLVER TYPE TRANSDUCER. THIS CONVERTER IS CHARACTERIZED BY CROSS-COUPLING OF THE OUTPUTS AND INPUTS OF TWO ALGEBRAIC COMBINING DEVICES SUCH AS OPERATIONAL AMPLIFIERS, BY STATIC SWITCHING MEANS RESPONSIVE TO INPUT SIGNALS DIGITALLY REPRESENTING A CHANGEABLE NUMBER, AND BY SIMPLE RESISTORS SELECTIVELY RENDERED EFFECTIVE TO PRODUCE A.C. SIGNALS PROPORTIONAL TO SINE AND COSINE FUNCTIONS OF THE SUMS OF ANGLES CORRESPONDING TO HIGHER AND LOWER ORDER PORTIONS OF THE CHANGEABLE NUMBER.-
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公开(公告)号：US3533097A
公开(公告)日：1970-10-06
申请号：US3533097D
申请日：1965-04-26
申请人： WHITTAKER CORP
发明人： SLEVEN MARVIN
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公开(公告)号：US4005396A
公开(公告)日：1977-01-25
申请号：US524867
申请日：1974-11-18
申请人： Hideo Fujiwara , Yukio Ichinose , Kazuo Ichino , Isamu Orita , Yasutaro Uesaka , Michiyasu Itoh , Hisashi Thuruoka
发明人： Hideo Fujiwara , Yukio Ichinose , Kazuo Ichino , Isamu Orita , Yasutaro Uesaka , Michiyasu Itoh , Hisashi Thuruoka
CPC分类号： G01D5/2073 , H03M1/26
摘要： A digital displacement sensor includes a plurality of zigzag coils provided with projecting or convex portions having different pitches and arranged on the surface of a flat plate. A magnetic head consisting of a magnetic body and a coil is wound around part of the magnetic body, the magnetic head being supported so as to be moved, while maintaining a given gap from the surface of the flat plate, whereby a digital signal corresponding to the displacement of the magnetic head is sensed by means of a plurality of zigzag coils.
摘要翻译： 数字位移传感器包括设置有具有不同间距的凸起部分并且布置在平板的表面上的多个Z字形线圈。 由磁体和线圈构成的磁头缠绕在磁体的一部分上，磁头被支撑以便移动，同时保持与平板的表面给定的间隙，由此对应于 通过多个之字形线圈来检测磁头的位移。
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