公开(公告)号：ES2555875T3

公开(公告)日：2016-01-11

申请号：ES12780347

申请日：2012-10-04

Applicant: MICROCHIP TECH INC

Inventor： JULICHER JOSEPH ,  CURTIS KEITH ,  KATZ PAUL N

IPC: G01N27/66 ,  G08B17/11

Abstract: Un procedimiento de determinación de la corriente de iones en una cámara de ionización, comprendiendo dicho procedimiento las etapas de: conexión de un primer y segundo electrodos (104, 106) de una cámara (102) de ionización a un voltaje con una primera polaridad; determinación de una primera corriente entre el primer y el segundo electrodos (104, 106) de la cámara (102) de ionización provocada por el voltaje con la primera polaridad; conexión del primer y el segundo electrodos (104, 106) de la cámara de ionización al voltaje con una segunda polaridad; determinación de una segunda corriente entre el primer y el segundo electrodos (104, 106) de la cámara (102) de ionización provocada por el voltaje con la segunda polaridad; y determinación de una diferencia entre la primera y segunda corrientes, en el que la diferencia es la corriente de iones a través de la cámara de ionización.

公开(公告)号：AU2002306678A1

公开(公告)日：2002-09-24

申请号：AU2002306678

申请日：2002-03-11

Applicant: MICROCHIP TECH INC

Inventor： HOANG CHINH ,  BRUNOLLI MICHAEL ,  KATZ PAUL N

IPC: H03M1/76 ,  H03M1/66 ,  H03M1/68

Abstract: A digitally switched impedance has improved linearity by minimizing the amount of impedance error introduced by switches used to switch the impedance elements comprising the digitally switched impedance. Improved settling time of the digitally switched impedance is achieved by reducing the amount of switch capacitance connected to the output of the digitally switched impedance. The digitally switched impedance may be fabricated on an integrated circuit die and the switches may be fabricated with complementary metal oxide semiconductor (CMOS) transistors. The number of impedances needed for a desired number of impedance step changes is reduced by using two major impedance ranks and one minor impedance rank, or two minor impedance ranks and one major impedance rank connected in series.

公开(公告)号：WO02073796A2

公开(公告)日：2002-09-19

申请号：PCT/US0207118

申请日：2002-03-11

Applicant: MICROCHIP TECH INC

Inventor： BRUNOLLI MICHAEL ,  HOANG CHINH ,  KATZ PAUL N

IPC: H03M1/76 ,  H03M1/66 ,  H03M1/68 ,  H03G

CPC classification number: H03M1/682 ,  H03M1/765

Abstract: A digitally switched impedance has improved linearity by minimizing the amount of impedance error introduced by switches used to switch the impedance elements comprising the digitally switched impedance. Improved settling time of the digitally switched impedance is achieved by reducing the amount of switch capacitance connected to the output of the digitally switched impedance. The digitally switched impedance may be fabricated on an integrated circuit die and the switches may be fabricated with complementary metal oxide semiconductor (CMOS) transistors. The number of impedances needed for a desired number of impedance step changes is reduced by using two major impedance ranks and one minor impedance rank, or two minor impedance ranks and one major impedance rank connected in series.

Abstract translation: 通过最小化由用于切换包括数字切换阻抗的阻抗元件的开关引起的阻抗误差的量，数字开关阻抗具有改善的线性度。 通过减少连接到数字开关阻抗的输出的开关电容量，可以实现数字开关阻抗的改善建立时间。 数字开关阻抗可以制造在集成电路管芯上，并且开关可以用互补金属氧化物半导体（CMOS）晶体管制造。 通过使用两个主要阻抗等级和一个次要阻抗等级，或两个次要阻抗等级和一个主要阻抗等级串联连接，减少所需数量的阻抗阶跃变化所需的阻抗数量。

公开(公告)号：WO02057097A2

公开(公告)日：2002-07-25

申请号：PCT/US0201177

申请日：2002-01-17

Applicant: MICROCHIP TECH INC

Inventor： VAN NIEKERK JAN ,  ST AMAND ROGER ,  URADNIK JOSEPH ,  KATZ PAUL N

IPC: B60C23/04 ,  G01L17/00 ,  G01M17/02 ,  B60C23/00

CPC classification number: B60C23/0416 ,  B60C23/007 ,  B60C23/009 ,  G01L17/00 ,  G01M17/02

Abstract: A wireless tire inflation pressure measurement device (122a-122d) is used to obtain inflation pressure information for a tire of a vehicle and a signal therefrom may be used for determining the location of the tire. An identifier may be associated with the inflation pressure information for each wheel of the vehicle. Tire rotation speed may be determined by amplitude fluctuations of a radio frequency carrier from a radio frequency transmitter rotating with the wheel. Differences in wheel rotation speeds during a turn may be used in determining the location of each tire of the vehicle. An antenna to the radio frequency transmitter. A radio frequency identification (RFID) tag and pressure sensor may be used as the wireless tire inflation pressure measurement device and a RFID pickup coil may be provided in each wheel well for pickup of the inflation pressure signals from each RFID tag on a wheel.

Abstract translation: 使用无线轮胎充气压力测量装置（122a-122d）来获得车辆轮胎的充气压力信息，并且可以使用该信号来确定轮胎的位置。 标识符可以与车辆的每个车轮的充气压力信息相关联。 轮胎转速可以由来自与轮一起旋转的射频发射器的射频载波的幅度波动来确定。 在转弯期间车轮转速的差异可以用于确定车辆的每个轮胎的位置。 射频发射机的天线。 无线电频率识别（RFID）标签和压力传感器可以用作无线轮胎充气压力测量装置，并且可以在每个轮舱中提供RFID拾取线圈，用于从车轮上的每个RFID标签获取充气压力信号。

公开(公告)号：WO2013052622A3

公开(公告)日：2013-06-20

申请号：PCT/US2012058688

申请日：2012-10-04

Applicant: MICROCHIP TECH INC

Inventor： JULICHER JOSEPH ,  CURTIS KEITH ,  KATZ PAUL N

IPC: G01N27/66 ,  G08B17/11

CPC classification number: G08B17/11 ,  G01N27/66 ,  G08B17/113

Abstract: An ion chamber provides a current representative of its characteristics as affected by external conditions, e.g., clean air or smoke. A direct current (DC) voltage is applied to the ion chamber at a first polarity and the resulting current through the ion chamber and parasitic leakage current is measured at the first polarity, then the DC voltage is applied to the ion chamber at a second polarity opposite the first polarity, and the resulting current through the ion chamber and parasitic leakage current is measured at the second polarity. Since substantially no current flows through the ion chamber at the second polarity, the common mode parasitic leakage current contribution may be removed from the total current measurement by subtracting the current measured at the second polarity from the current measured at the first polarity, resulting in just the current through the ion chamber.

Abstract translation: 离子室提供代表其受外部条件（例如清洁空气或烟雾）影响的其特性的电流。 直流（DC）电压以第一极性施加到离子室，并且通过离子室产生的电流和寄生漏电流以第一极性被测量，然后将直流电压以第二极性施加到离子室 与第一极性相反，并且在第二极性处测量通过离子室的所得电流和寄生漏电流。 由于基本上没有电流以第二极性流过离子室，所以可以从总电流测量中去除从第一极性测得的电流以第二极性测量的电流来消除共模寄生漏电流贡献，从而产生正好 电流通过离子室。