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1. 发明授权

EP1191343B1 Method and apparatus for fault detection in a resistive bridge sensor 有权
标题翻译：一种用于在电阻电桥传感器检测错误的方法和装置
公开(公告)号：EP1191343B1
公开(公告)日：2006-04-12
申请号：EP01307987.6
申请日：2001-09-19
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Maher, Thomas R. , Corkum, David L.
IPC分类号： G01D18/00 , G01L25/00 , G01L27/00 , G01R31/28
CPC分类号： G01R17/10 , G01R31/2829

2. 发明公开

EP1416286A2 Wheatstone bridge 有权
标题翻译： Wheatstonebrücke
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
申请人： Texas Instruments Incorporated
发明人： Kawate, Keith W. , Corkum, David L. , Maher, Thomas R.
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。

3. 发明公开

EP1098441A3 Potentiometric DAC having improved ratiometric output voltage stability 审中-公开
标题翻译：电位DAW具有改进的比例输出电压稳定
公开(公告)号：EP1098441A3
公开(公告)日：2003-08-27
申请号：EP00309743.3
申请日：2000-11-03
申请人： Texas Instruments Incorporated
发明人： Corkum, David L.
IPC分类号： H03M1/06
CPC分类号： H03M1/0663 , H03M1/765
摘要： A potentiometric digital to analog converter includes switches to electrically connect a string of n resistors between two voltage supplies to charge a first capacitor (C 1 ) through a first tap and store the charge and then to reverse the electrical connections of the string to the two power supplies to charge a second capacitor (C 2 ) through a second tap connected at an inverse location symmetrical about the average voltage of the voltages at the supply connectivity switches and store the charge of the second capacitor. The voltage (V A , V B ) on the two capacitors is then averaged to provide a ratiometric output voltage which is insensitive to the drift of values of the string of resistors.

4. 发明公开

EP1191343A3 Method and apparatus for fault detection in a resistive bridge sensor 有权
标题翻译：一种用于在电阻电桥传感器检测错误的方法和装置
公开(公告)号：EP1191343A3
公开(公告)日：2003-10-08
申请号：EP01307987.6
申请日：2001-09-19
申请人： Texas Instruments Incorporated
发明人： Maher, Thomas R. , Corkum, David L.
IPC分类号： G01R31/28
CPC分类号： G01R17/10 , G01R31/2829
摘要： A full Wheatstone bridge sensor has conditioning electronics of an ASIC connected thereto. Two independently controlled diagnostic switches (S1, S2) in the ASIC are commonly connected to one of the bridge output nodes. The first diagnostic switch connects first resistor between the bridge output node and bridge supply voltage and the second diagnostic switch connects a second resistor between the bridge output and bridge ground. The first diagnostic switch closes during a first diagnostic waveform phase and opens during all other phases of operation. The second diagnostic switch closes during a second and third waveform phase and opens during all other phases of operation. The diagnostic waveforms are used to test major signal conditioning and fault reporting paths of the ASIC.

5. 发明公开

EP1213563A2 Method and apparatus for providing detection of excessive negative offset of a sensor 审中-公开
标题翻译：装置和方法用于发现一个负的过传感器的偏移
公开(公告)号：EP1213563A2
公开(公告)日：2002-06-12
申请号：EP01307967.8
申请日：2001-09-19
申请人： Texas Instruments Incorporated
发明人： Maher, Thomas R. , Corkum, David L.
IPC分类号： G01D3/08
CPC分类号： G01D3/08 , G01L1/2268 , G01L9/04
摘要： Detection of excessive negative offset of a condition responsive sensor such as a pressure responsive full Wheatstone bridge element (10) and circuitry associated therewith is obtained by taking the sensor's output signal, preferably after the signal has been compensated for both gain and offset and comparing (Q1) the signal (V X ) with a reference voltage (V REF1 ) selected to reflect an unobtainable stimulus input condition and driving the compensated signal to a fault level when the compensated signal exceeds the reference voltage.
摘要翻译：一个条件响应传感器的过度负的检测信号的偏移：例如具有通过取传感器的输出信号，优选后的信号已经为这两个增益补偿和偏移和比较（获得相关联的有一个压力响应全惠斯登电桥元件（10）和电路 Q1）的信号（VX）与选定的，以反映在无法得到的刺激输入条件和驱动所述补偿后的信号到一个故障等级当补偿信号超过参考电压的参考电压（V REF1）。

6. 发明公开

EP1191343A2 Method and apparatus for fault detection in a resistive bridge sensor 有权
标题翻译：维尔法赫恩·弗里谢里恩·祖尔·费勒雷肯
公开(公告)号：EP1191343A2
公开(公告)日：2002-03-27
申请号：EP01307987.6
申请日：2001-09-19
申请人： Texas Instruments Incorporated
发明人： Maher, Thomas R. , Corkum, David L.
IPC分类号： G01R31/28
CPC分类号： G01R17/10 , G01R31/2829
摘要： A full Wheatstone bridge sensor has conditioning electronics of an ASIC connected thereto. Two independently controlled diagnostic switches (S1, S2) in the ASIC are commonly connected to one of the bridge output nodes. The first diagnostic switch connects first resistor between the bridge output node and bridge supply voltage and the second diagnostic switch connects a second resistor between the bridge output and bridge ground. The first diagnostic switch closes during a first diagnostic waveform phase and opens during all other phases of operation. The second diagnostic switch closes during a second and third waveform phase and opens during all other phases of operation. The diagnostic waveforms are used to test major signal conditioning and fault reporting paths of the ASIC.
摘要翻译：一个完整的惠斯通电桥传感器具有连接到其上的ASIC的调节电路。 ASIC中的两个独立控制的诊断开关（S1，S2）通常连接到桥接输出节点之一。第一个诊断开关将桥接输出节点和桥接电源电压之间的第一个电阻连接起来，第二个诊断开关连接桥接输出和桥接地之间的第二个电阻。第一个诊断开关在第一个诊断波形阶段关闭，并在所有其他操作阶段打开。第二个诊断开关在第二个和第三个波形阶段关闭，并在所有其他操作阶段打开。诊断波形用于测试ASIC的主要信号调理和故障报告路径。

7. 发明公开

EP1098441A2 Potentiometric DAC having improved ratiometric output voltage stability 审中-公开
标题翻译：电子邮件地址
公开(公告)号：EP1098441A2
公开(公告)日：2001-05-09
申请号：EP00309743.3
申请日：2000-11-03
申请人： Texas Instruments Incorporated
发明人： Corkum, David L.
IPC分类号： H03M1/06
CPC分类号： H03M1/0663 , H03M1/765
摘要： A potentiometric digital to analog converter includes switches to electrically connect a string of n resistors between two voltage supplies to charge a first capacitor (C 1 ) through a first tap and store the charge and then to reverse the electrical connections of the string to the two power supplies to charge a second capacitor (C 2 ) through a second tap connected at an inverse location symmetrical about the average voltage of the voltages at the supply connectivity switches and store the charge of the second capacitor. The voltage (V A , V B ) on the two capacitors is then averaged to provide a ratiometric output voltage which is insensitive to the drift of values of the string of resistors.
摘要翻译：电位数转换器包括用于在两个电压源之间电连接一组n个电阻器的开关，用于通过第一次抽头对第一电容器（C1）充电并存储电荷，然后将串的电连接反向到两个电源用于通过连接在与供电连接开关处的电压的平均电压对称的反向位置处的第二抽头对第二电容器（C2）充电并存储第二电容器的电荷。然后对两个电容器上的电压（VA，VB）进行平均，以提供对电阻串的值的漂移不敏感的比例输出电压。

8. 发明公开

EP1548417A1 Sensor system for and method of measuring variable physical quantities 有权
标题翻译： Sensorsystem zur MessungveränderlicherphysikalischerGrössen
公开(公告)号：EP1548417A1
公开(公告)日：2005-06-29
申请号：EP04257249.5
申请日：2004-11-23
申请人： Texas Instruments Incorporated
发明人： Maher, Thomas R. , Corkum, David L.
IPC分类号： G01L9/02 , G01L1/22 , G01D3/02 , G01D3/036
CPC分类号： G01D3/022 , G01D3/0365
摘要： Signal conditioning of multiple sense elements is shown for providing information to a system requiring high accuracy and robust fault coverage. A first signal conditioning ASIC (10) pre-conditions the sense element data and a second system control ASIC (14) mathematically solves predetermined compensation relations based on the output of ASIC (10) and stored compensation data to fully condition the sensor output signal(s). The sense elements (1-6) are each formed by two half bridges whose inputs are pre-conditioned by separate, identical signal conditioning paths to provide highly accurate sense and diagnostic information.
摘要翻译：示出了多个感测元件的信号调理，用于向需要高精度和鲁棒故障覆盖的系统提供信息。第一信号调节ASIC（10）预处理感测元件数据，并且第二系统控制ASIC（14）基于ASIC（10）的输出和存储的补偿数据在数学上解决预定的补偿关系以完全调节传感器输出信号 S）。感测元件（1-6）分别由两个半桥形成，两个半桥的输入通过分开的相同的信号调节路径进行预处理，以提供高精度的感测和诊断信息。

9. 发明公开

EP1111344A1 Sensor fault detection method and apparatus 有权
标题翻译： Verfahren und Vorrichtung zur Sensorfehlererkennung
公开(公告)号：EP1111344A1
公开(公告)日：2001-06-27
申请号：EP00311374.3
申请日：2000-12-19
申请人： Texas Instruments Incorporated
发明人： Kawate, Keith W. , Maher, Thomas R. , Corkum, David L.
IPC分类号： G01D3/08 , G01D18/00
CPC分类号： G01D18/00 , G01D3/022 , G01D3/08
摘要： An in-range fault detection system for a full wheatstone bridge element 11 2) having piezoresistive elements (R1, R2, R3, R4) has bridge outputs (INP, INM) connected to measuring means in the form of a first circuit portion (13) to provide a common mode voltage (V CM ). A second circuit portion (14) is used to provide a centering voltage (C*V BRG ) equal to the common mode voltage at the time of sensor calibration and a third circuit portion (15) is used to provide a small window voltage (W*V BRG ) which is a fraction of bridge voltage. The value (W*V BRG ) is subtracted from (C*V BRG ) at a first summing circuit (SUM1) and added to (C*V BRG ) at a second summing circuit (SUM2) and the results are each compared to the common mode voltage by comparators (Q1, Q2) which are then determined to be within or without a window of valid values by an OR rate (Q3).
摘要翻译：具有压阻元件（R1，R2，R3，R4）的全惠斯通电桥元件11 2的范围内故障检测系统具有以第一电路部分（13）的形式连接到测量装置的桥接输出（INP，INM））以提供共模电压（VCM）。第二电路部分（14）用于在传感器校准时提供等于共模电压的定心电压（C * VBRG），并且第三电路部分（15）用于提供小的窗口电压（W * VBRG），这是桥电压的一小部分。在第一求和电路（SUM1）从（C * VBRG）中减去值（W * VBRG），并在第二求和电路（SUM2）处加到（C * VBRG），并将结果与共模电压然后由比较器（Q1，Q2）确定它们是否在有效值的窗口内或通过OR率（Q3）。

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