公开(公告)号：EP0179611A3

公开(公告)日：1989-02-22

申请号：EP85307444.1

申请日：1985-10-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Paganelli, Jude V. ,  Pundarika, Eshwarahalli S. ,  Shukla, Vishwa ,  Padovani, Francois A. ,  Cooper, Lawrence

IPC: G01L23/24 ,  G01L9/08 ,  G01L23/10

CPC classification number: G01L23/10 ,  G01L9/008

Abstract: A cylinder pressure transmitter has a body with a chamber open at one end accommodating pressure responsive piezoelectric means. A cup-shaped diaphragm member has a side wall secured with a laser weld to a neck portion of the body which is formed as a rim around the chamber opening. The bottom of the member extends over the opening and has a slightly domed portion exposed to the pressure in a cylinder of an internal combustion engine to serve as a diaphragm responsive to variations in cylinder pressure to apply corresponding pressure forces to the piezoelectric means, thereby to provide initial electrical signals corresponding to the cylinder pressures. Electronic means are carried on the body to amplify the initial electrical signals for transmission to computer control means at a location remote from the cylinder for regulating engine operation to improve performance. Force transmitting means such as a metal ball and a ceramic socket are arranged in sequence to be movable in the body chamber, include materials of relatively low thermal conductivity, and have portions of different areas and crosssections cooperating between the diaphragm member bottom and the piezoelectric means for accurately transmitting pressure forces from the diaphragm to the piezoelectric means while retarding transfer of heat from the cylinder environment to the piezoelectric means through the diaphragm.

公开(公告)号：EP0596711B1

公开(公告)日：1998-01-21

申请号：EP93308772.8

申请日：1993-11-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Shukla, Vishwa N. ,  Padovani, Francois A. ,  Lukasiewicz, Stanley J.

IPC: G01L9/12 ,  G01L9/00

CPC classification number: G01L9/0075 ,  Y10T29/435

公开(公告)号：EP0179611A2

公开(公告)日：1986-04-30

申请号：EP85307444.1

申请日：1985-10-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Paganelli, Jude V. ,  Pundarika, Eshwarahalli S. ,  Shukla, Vishwa ,  Padovani, Francois A. ,  Cooper, Lawrence

IPC: G01L23/24 ,  G01L9/08 ,  G01L23/10

CPC classification number: G01L23/10 ,  G01L9/008

Abstract: A cylinder pressure transmitter has a body with a chamber open at one end accommodating pressure responsive piezoelectric means. A cup-shaped diaphragm member has a side wall secured with a laser weld to a neck portion of the body which is formed as a rim around the chamber opening. The bottom of the member extends over the opening and has a slightly domed portion exposed to the pressure in a cylinder of an internal combustion engine to serve as a diaphragm responsive to variations in cylinder pressure to apply corresponding pressure forces to the piezoelectric means, thereby to provide initial electrical signals corresponding to the cylinder pressures. Electronic means are carried on the body to amplify the initial electrical signals for transmission to computer control means at a location remote from the cylinder for regulating engine operation to improve performance. Force transmitting means such as a metal ball and a ceramic socket are arranged in sequence to be movable in the body chamber, include materials of relatively low thermal conductivity, and have portions of different areas and crosssections cooperating between the diaphragm member bottom and the piezoelectric means for accurately transmitting pressure forces from the diaphragm to the piezoelectric means while retarding transfer of heat from the cylinder environment to the piezoelectric means through the diaphragm.

Abstract translation: 气缸压力变送器具有主体，该主体具有一端容纳压力响应压电装置的开口。 杯形隔膜构件具有用激光焊接固定到主体的颈部的侧壁，其形成为围绕室开口的边缘。 构件的底部延伸越过开口并且具有暴露于内燃机的气缸中的压力的​​略微圆顶部分，以用作响应于气缸压力变化的隔膜，以将相应的压力施加到压电装置，从而 提供对应于气缸压力的初始电信号。 电子装置被承载在身体上以放大初始电信号，以便在远离气缸的位置处传送到计算机控制装置，用于调节发动机操作以改善性能。 力传递装置如金属球和陶瓷插座依次布置成可以在主体腔中移动，包括导热性相对较低的材料，并且具有在隔膜构件底部和压电装置之间配合的不同区域和横截面的部分 用于将压力从隔膜精确地传递到压电装置，同时延迟通过隔膜将热量从气缸环境传递到压电装置。

公开(公告)号：EP0596711A2

公开(公告)日：1994-05-11

申请号：EP93308772.8

申请日：1993-11-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Shukla, Vishwa N. ,  Padovani, Francois A. ,  Lukasiewicz, Stanley J.

IPC: G01L9/12 ,  G01L9/00

CPC classification number: G01L9/0075 ,  Y10T29/435

Abstract: A monolithic capacitive pressure transducer is shown composed of ceramic material having a closed cavity formed near a surface thereof and having capacitor plates formed on two opposed surfaces defining the cavity. Vias are formed extending from the capacitor plates to permit electrical connection therewith. The transducer is made by separately forming under pressure a diaphragm and a base having a recess in the top surface using ceramic powder coated with an organic binder. A metal layer is deposited on the two pieces and the pieces are then joined together to form a single unit. A spacer may be inserted in the recess to ensure that a predetermined gap is maintained between the two parts during the joining operation. The parts are then debinderized by heating in air to a first temperature level to allow the binder organics, as well as the spacer organics if a spacer is employed, to be vaporized and/or decomposed and removed through the open pores of the diaphragm and base. The unit is then brought up to a sintering temperature in a reducing atmosphere to change it into a monolithic body and to convert the metallized layer into a conductive layer bonded to the ceramic.

Abstract translation: 单片电容式压力传感器由陶瓷材料组成，该陶瓷材料在其表面附近形成有封闭的空腔，并且具有形成在限定空腔的两个相对的表面上的电容器板。 通孔形成为从电容器板延伸以允许与其电连接。 传感器通过在压力下分开地形成隔膜和在顶表面上具有凹陷的基底，其中使用涂覆有机粘合剂的陶瓷粉末。 金属层沉积在两片上，然后将片连接在一起以形成单个单元。 间隔件可以插入凹部中以确保在接合操作期间在两个部件之间保持预定的间隙。 然后通过在空气中加热至第一温度水平来使部件脱粘，以允许粘合剂有机物以及间隔器有机物，如果使用间隔物，则通过隔膜和基底的开孔气化和/或分解和去除 。 然后将该单元升温至还原气氛中的烧结温度以将其改变成单体，并将金属化层转化为与陶瓷结合的导电层。

公开(公告)号：EP0534670A1

公开(公告)日：1993-03-31

申请号：EP92308460.2

申请日：1992-09-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Padovani, Francois A.

IPC: G01N21/77 ,  G01N21/43

CPC classification number: G01N21/7703 ,  G01N2201/0873

Abstract: A fiber optic sensor for detecting the presence or concentration of particular chemical or biological species in a zone to be monitored has light-emitting and detecting elements such as a gallium arsenide light-emitting diode and a Schottky diode light detector provided in a semiconductor body, and has an optical fiber formed in situ on a surface of the body to conduct light from the light-emitting diode to the detector. The fiber has a long light-transmitting core of a material such as silicon dioxide deposited on a semiconductor body surface and defined by photolithographic techniques and has a cladding deposited over and around the core of a material of relatively lower refractive index than the core. The cladding material reacts when contacted by the particular chemical or biological species to produce measurable changes in transmission of light through the fiber so that the detector provides an electrical signal representative of the presence or concentration of the species.

Abstract translation: 用于检测待监测区域中特定化学或生物物质的存在或浓度的光纤传感器具有发光和检测元件，例如设置在半导体本体中的砷化镓发光二极管和肖特基二极管光检测器， 并且具有在本体的表面上原位形成的光纤，以将来自发光二极管的光传导到检测器。 光纤具有长的透光芯，诸如沉积在半导体主体表面上的二氧化硅的材料，并通过光刻技术限定，并且具有沉积在比芯更低折射率的材料的芯上和周围的包层。 包层材料在被特定化学或生物物质接触时反应，以产生通过纤维的光透射的可测量的变化，使得检测器提供代表物种的存在或浓度的电信号。

公开(公告)号：EP0596711A3

公开(公告)日：1994-08-17

申请号：EP93308772.8

申请日：1993-11-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Shukla, Vishwa N. ,  Padovani, Francois A. ,  Lukasiewicz, Stanley J.

IPC: G01L9/12 ,  G01L9/00

CPC classification number: G01L9/0075 ,  Y10T29/435

Abstract: A monolithic capacitive pressure transducer is shown composed of ceramic material having a closed cavity formed near a surface thereof and having capacitor plates formed on two opposed surfaces defining the cavity. Vias are formed extending from the capacitor plates to permit electrical connection therewith. The transducer is made by separately forming under pressure a diaphragm and a base having a recess in the top surface using ceramic powder coated with an organic binder. A metal layer is deposited on the two pieces and the pieces are then joined together to form a single unit. A spacer may be inserted in the recess to ensure that a predetermined gap is maintained between the two parts during the joining operation. The parts are then debinderized by heating in air to a first temperature level to allow the binder organics, as well as the spacer organics if a spacer is employed, to be vaporized and/or decomposed and removed through the open pores of the diaphragm and base. The unit is then brought up to a sintering temperature in a reducing atmosphere to change it into a monolithic body and to convert the metallized layer into a conductive layer bonded to the ceramic.

公开(公告)号：EP0179611B1

公开(公告)日：1991-09-11

申请号：EP85307444.1

申请日：1985-10-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Paganelli, Jude V. ,  Pundarika, Eshwarahalli S. ,  Shukla, Vishwa ,  Padovani, Francois A. ,  Cooper, Lawrence

IPC: G01L23/24 ,  G01L9/08 ,  G01L23/10

CPC classification number: G01L23/10 ,  G01L9/008