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公开(公告)号：EP1416286A2
公开(公告)日：2004-05-06
申请号：EP03256596.2
申请日：2003-10-20
IPC分类号： G01R17/10
CPC分类号： G01R17/10
摘要： An ASIC (14, 14', 14") conditions two independent outputs (VINM, VINP) of a full Wheatstone piezoresistive bridge (12) in separate conditioning paths. Each path is provided with a bridge supply voltage (VHB1, VHB2) which can serve as a temperature related input signal to respective offset and gain compensation control circuits. The half bridge outputs are inputted to respective amplifiers (U1, U2) along with a selected percentage of the temperature dependent bridge supply voltage. The outputs of the amplifiers provide a signal proportional to respective half bridge output voltage. In one embodiment, the output of the amplifier (U2) in one conditioning path of one half bridge is connected to the input of an amplifier (U4) in the other conditioning path to provide a signal in the one path proportional to the Wheatstone bridge differential output voltage and in the other path a signal proportional to the Wheatstone half bridge output voltage. In another embodiment, the temperature dependent bridge supply voltage is multiplexed for a selected time upon power-up to an amplifier (U5) which normally receives an input from one of the bridge outputs.
摘要翻译： ASIC（14,14'，14“）在独立的调理路径中对完整的惠斯登电阻压阻电桥（12）的两个独立输出（VINM，VINP）进行调节，每条路径都有一个桥供电电压（VHB1，VHB2） 作为与偏移和增益补偿控制电路的温度相关输入信号，半桥输出与选定百分比的温度依赖电桥电源电压一起输入到各个放大器（U1，U2），放大器的输出提供 在一个实施例中，一个半桥的一个调节路径中的放大器（U2）的输出连接到另一个调节路径中的放大器（U4）的输入端以提供信号 与惠斯登电桥差分输出电压成比例的一条路径，另一条路径上的信号与惠斯通半桥输出电压成比例。另一个实施例中，温度依赖 在通常接收来自桥接输出之一的输入的放大器（U5）上电时，nt桥式电源电压在选定的时间被多路复用。
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公开(公告)号：EP1638181A3
公开(公告)日：2006-04-19
申请号：EP05254787.4
申请日：2005-07-29
发明人： Pellon, Christian V. , Rabiner, Mark D. , Nicolls, Christopher A. , Zanelli, Robert , Fontaine, Lucien , Edmunds, Lynwald , Parker, Michael , Kawate, Keith W. , Mayer, Roger D. , Lavado, Michael J. , Ting, Jeffrey B.
IPC分类号： H02H1/00
CPC分类号： H02H1/0015
摘要： An apparatus and method for detecting arc faults that have reduced susceptibility to nuisance tripping. The apparatus includes a current sensor, an input sense circuit, an arcing sense circuit, a power supply, a tripping (firing) circuit, a processor, and an electromechanical interface. The current sensor monitors a power input comprising an AC current, and provides high frequency components of the AC current to the input sense circuit. The input sense circuit filters and rectifies the AC signal, and provides the rectified signal to the arcing sense circuit. The arcing sense circuit provides a voltage level accumulated over a predetermined time period, and digital signals indicative of possible electrical arcing occurring during the sampling period, to the processor. The processor measures the voltage level, stores information relating to measured voltages and the digital signals, and processes the stored information using one or more algorithms, thereby determining whether the signals resulted from an arc fault or a nuisance load. In the event the signals resulted from an arc fault, the processor activates the firing circuit to trip the electromechanical interface, thereby interrupting the power output to the load.
摘要翻译： 一种检测电弧故障的装置和方法，其具有降低的烦扰跳闸的易感性。 该设备包括电流传感器，输入感测电路，电弧感测电路，电源，跳闸（触发）电路，处理器和机电接口。 电流传感器监测包括AC电流的功率输入，并将AC电流的高频分量提供给输入感测电路。 输入检测电路对AC信号进行滤波和整流，并将整流信号提供给电弧检测电路。 电弧检测电路向处理器提供在预定时间段内累积的电压电平以及指示在采样周期期间发生的可能电弧的数字信号。 处理器测量电压电平，存储与测量电压和数字信号有关的信息，并且使用一种或多种算法处理存储的信息，由此确定信号是否由电弧故障或干扰性负载产生。 如果信号是由电弧故障引起的，则处理器激活触发电路以使机电接口跳闸，从而中断输出到负载的功率。
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公开(公告)号：EP0542436B1
公开(公告)日：1996-04-24
申请号：EP92309630.9
申请日：1992-10-21
发明人： Reidemeister, Eric P. , Kawate, Keith W. , Christensen, Douglas B. , Johnson, Larry K. , Mandeville, Raymond E. , Southworth, Robert O.
IPC分类号： G01P15/125 , G01P1/02
CPC分类号： G01P15/125 , G01P1/023 , G01P2015/0828
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公开(公告)号：EP0367442A2
公开(公告)日：1990-05-09
申请号：EP89310691.4
申请日：1989-10-18
IPC分类号： G01L3/10
CPC分类号： G01L3/105
摘要： A torque sensing device has a torque transmitting member with ends which are relatively rotatable around a member axis in response to an applied torque. Lost motion components rotating with the member ends have portions compactly extending along the member axis to engage the other component to limit such rotation after a predetermined degree of relative rotation has occurred. Two ferromagnetic elements rotating with the respective lost motion components have portions which extend along the member axis into interleaved relation with corresponding portions of the other element to form spaced pairs of respective element portions at each of two sides of a plane which extends transversely across the member axis. The elements respond to relative rotation of the torque transmitting member ends to proportionally increase the spacing in the pairs of element portions at one side of the noted plane and to decrease the spacing in the pairs of element portions at an opposite side of the plane. An exciting coil surrounding the elements induces magnetic leakage flux at the spacing of the pairs of element portions representative of the degree of spacing and a pair of sensing coils disposed around the elements are coupled to that magnetic leakage flux at respective sides of the noted plane. The sensing coils are differentially connected to provide an output signal corresponding to the applied torque.
摘要翻译： 扭矩感测装置具有扭矩传递构件，所述扭矩传递构件的端部响应于施加的扭矩而可围绕构件轴线相对旋转。 与部件端部一起旋转的空转部件具有沿部件轴线紧凑地延伸的部分，以便在发生预定程度的相对旋转之后与另一部件接合以限制这种旋转。 与相应的空动部件一起旋转的两个铁磁元件具有沿着构件轴线与另一元件的对应部分交错的部分，以在横向延伸穿过构件的平面的两侧中的每一侧形成各自的元件部分的间隔对 轴。 这些元件响应于转矩传递构件端部的相对旋转以成比例地增加在所述平面的一侧处的成对元件部分中的间隔并且减小在该平面的相对侧处的成对元件部分中的间隔。 围绕元件的激励线圈在代表间隔程度的元件部分对的间隔处感应出漏磁通，并且围绕元件设置的一对感测线圈与在所述平面的各侧的漏磁通耦合。 感测线圈被差分连接以提供对应于所施加的转矩的输出信号。
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公开(公告)号：EP0360405A3
公开(公告)日：1990-04-11
申请号：EP89308182.8
申请日：1989-08-11
CPC分类号： G01F23/244
摘要： A two wire circuit for indicating liquid level in an automobile utilizing an incandescent lamp to provide the alarm signal with the power required to energize the circuit being derived via the lamp whereby the lamp and the circuit are serially connected between the battery terminals. The alarm circuits are provided with an oscillator which performs the dual functions of providing the detection signal through the probe and the drive signal for the output transistor controlling the lamp. In a first embodiment, signal pulses from an oscillator provide signals to an output circuit as well as to the detection probe in the forth of pulses, those to the probe controlling a latch responsive to the output of Schmitt trigger. The Schmitt trigger output is determined by the status of the probe in response to the signal thereto from the oscillator. The delay and output circuits are simultaneously controlled by the same oscillator pulses and the output of the latch to control operation of a lamp. Sufficient current always travels through the lamp to provide power to the remainder of the circuit. In a second embodiment, the output circuit is an SCR which stays on once latched until power thereacross is removed. In addition, positive and negative feedback are provided from the output to the input of the operational amplifier, the positive feedback path being shunted to reference potential when the probe resistance is low to provide no output from the op amp and therefore maintain the SCR off. When the probe resistance increases, the positive feedback becomes dominant and causes an oscillation to appear from the op amp which turns on the SCR and therefore the lamp also turns on.
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公开(公告)号：EP0360405A2
公开(公告)日：1990-03-28
申请号：EP89308182.8
申请日：1989-08-11
CPC分类号： G01F23/244
摘要： A two wire circuit for indicating liquid level in an automobile utilizing an incandescent lamp to provide the alarm signal with the power required to energize the circuit being derived via the lamp whereby the lamp and the circuit are serially connected between the battery terminals. The alarm circuits are provided with an oscillator which performs the dual functions of providing the detection signal through the probe and the drive signal for the output transistor controlling the lamp. In a first embodiment, signal pulses from an oscillator provide signals to an output circuit as well as to the detection probe in the forth of pulses, those to the probe controlling a latch responsive to the output of Schmitt trigger. The Schmitt trigger output is determined by the status of the probe in response to the signal thereto from the oscillator. The delay and output circuits are simultaneously controlled by the same oscillator pulses and the output of the latch to control operation of a lamp. Sufficient current always travels through the lamp to provide power to the remainder of the circuit. In a second embodiment, the output circuit is an SCR which stays on once latched until power thereacross is removed. In addition, positive and negative feedback are provided from the output to the input of the operational amplifier, the positive feedback path being shunted to reference potential when the probe resistance is low to provide no output from the op amp and therefore maintain the SCR off. When the probe resistance increases, the positive feedback becomes dominant and causes an oscillation to appear from the op amp which turns on the SCR and therefore the lamp also turns on.
摘要翻译： 一种用于指示使用白炽灯的汽车中的液位的双线电路，用于向警报信号提供通过该灯引导电路所需的功率，由此灯和电路串联连接在电池端子之间。 报警电路设置有执行通过探头提供检测信号和控制灯的输出晶体管的驱动信号的双重功能的振荡器。 在第一实施例中，来自振荡器的信号脉冲向第四脉冲中的输出电路以及检测探针提供信号，那些到探头的信号响应于施密特触发器的输出而控制锁存器。 响应于来自振荡器的信号，施密特触发器输出由探头的状态决定。 延迟和输出电路同时由相同的振荡器脉冲和锁存器的输出控制，以控制灯的工作。 足够的电流总是穿过灯，以向电路的其余部分供电。 在第二实施例中，输出电路是一直被锁定的SCR，直到其上的功率被去除。 此外，从输出到运算放大器的输入提供正和负反馈，当探头电阻低时，正反馈路径被分流到参考电位，以不提供运算放大器的输出，从而保持SCR关闭。 当探头电阻增加时，正反馈成为主导，并从导通SCR的运算放大器出现振荡，因此灯也导通。
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7.发明公开
公开(公告)号：EP0872713A2
公开(公告)日：1998-10-21
申请号：EP98302810.1
申请日：1998-04-09
IPC分类号： G01D5/241
CPC分类号： G01L9/125
摘要： A capacitive transducer (10) which provides an output voltage in response to the application of a mechanical stimulus such as pressure or acceleration includes a signal conditioning integrated circuit (12) to which are connected a variable capacitor (C VAR ), a reference capacitor (C REF ), a linear correction capacitor (C LIN ) as well as an integrating capacitor (C INT ) and associated filtering components. The linear correction capacitor (C LIN ) is used to offset a fixed parasitic charge associated with the variable capacitor. Any net error charge appearing on a detect, common node (pin 4) between the variable capacitor and the reference capacitor is cancelled out by means of an analog feedback network (22). In a modified embodiment a thermal compensation network (40) allows for correction for thermal error at a second temperature without having any affect at a first temperature.
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公开(公告)号：EP0600751A3
公开(公告)日：1994-10-12
申请号：EP93309730.5
申请日：1993-12-03
CPC分类号： H03K17/166 , H02H3/093 , H03K17/0822 , H03K17/18 , H03K2017/0806
摘要： A solid state power controller for switching power on and off to an electrical load which also serves as a circuit protection device protecting the load and/or the wire connected between the load output terminal of the controller and ground from thermal damage due to current overload is shown. When a current overload exists the controller interrupts current to the load in a time inversely proportional to the square of the magnitude of the overload as shown in a trip time vs. load current curve (Fig 4). The controller also limits the load current to a selected maximum level by controlling the drain-source resistance of power MOSFETs (PS1-7) used for switching the power. A secondary interrupt is provided in the event that the junction temperature of the MOSFETs has risen a selected maximum level. A thermal memory feature is included for both interrupt signals. The controller is controlled by a single on/off input line (COMMAND) and provides both a status (STATUS) and trip (TRIP) output line to indicate its state. The status can be configured to monitor load voltage or load current flow as desired. The controller also can be configured to default to either an on or off state in the event the input line is disconnected. The controller is made so that it is externally programmable by providing selected external connection points (MPA, DTA, CLA1, CLA2) and choosing values of certain components (R cl1i , R cl2i , R ii , C ii , R mpi , C mpi ) contained within the sealed controller package which results in selected default condition.
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公开(公告)号：EP0375262A3
公开(公告)日：1991-07-17
申请号：EP89313033.6
申请日：1989-12-13
发明人： Strott, Douglas B. , White, Timothy , Kawate, Keith W. , Wiecek, Thomas , Cobb, Carleton M., III , Nott, Sepideh H.
摘要： The disclosure relates to an electrothermal sensor having an electrically conductive substrate, an electrically insulating layer disposed on the substrate, a first thermistor disposed on a central region of the electrically insulating layer, a second thermistor disposed adjacent an edge of the electrically insulating layer, an electrical coupling device on the electrically insulating layer for coupling the first and second thermistors externally of the electrically insulating layer and a pair of electrical connecting devices coupled to the substrate and passing through the electrically insulating layer, the first thermistor being disposed between the pair of electrical connecting devices.
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公开(公告)号：EP0405835A3
公开(公告)日：1991-05-02
申请号：EP90306759.3
申请日：1990-06-20
发明人： Kawate, Keith W. , Sogge, Dale R.
CPC分类号： G01F23/244 , F01P11/18 , F01P2023/08
摘要： A two wire circuit for indicating liquid level in an automobile utilizing an incandescent lamp (3) to provide the alarm signal with the power required to energize the circuit being derived via the lamp whereby the lamp and the circuit are serially connected between the battery terminals. The alarm circuits are provided with an oscillator which performs the dual functions of providing the detection signal through the probe and the drive signal for the output transistor controlling the lamp. In a first embodiment, signal pulses from an oscillator provide signals to an output circuit as well as to the detection probe (5) in the form of pulses, the pulses to the probe controlling a latch responsive to the output of a Schmitt trigger. The Schmitt trigger output is determined by the status of the probe in response to the signal thereto from the oscillator. The delay and output circuits are simultaneously controlled by the same oscillator pulses and the output of the latch to control operation of a lamp. Sufficient current always travels through the lamp to provide power to the remainder of the circuit. In a second embodiment, the output circuit is an SCR which stays on once latched until power thereacross is removed. In addition, positive and negative feedback are provided from the output to the input of the operational amplifier, the positive feedback path being shunted to reference potential when the probe resistance is low to provide no output from the op amp and therefore maintain the SCR off. When the probe resistance increases, the positive feedback becomes dominant and causes an oscillation to appear from the op amp which turns on the SCR and therefore the lamp also turns on. A further embodiment includes circuitry to provide lamp turn-on and/or turn-off time delay.
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