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    • 2. 发明授权
    • Titania oxygen sensor with chrome oxide compensator
    • 二氧化钛氧传感器与氧化铬补偿器
    • US4387359A
    • 1983-06-07
    • US226652
    • 1981-01-21
    • Tseng-Ying TienDavid C. WeberPhilip R. Woodruff
    • Tseng-Ying TienDavid C. WeberPhilip R. Woodruff
    • G01N27/12H01L7/00
    • G01N27/12
    • An oxygen sensor utilizes a chrome oxide compensating resistor (5) in series with a titania sensing resistor (3). The chrome oxide resistor (5) not only compensates for the effects of temperature on the titania sensing (3) resistor, but since it exhibits (p) type behavior while the titania exhibits (n) type behavior in the presence of gaseous oxygen, the sensitivity of the sensor is increased. The resistors (3, 5) can be applied as a film to a substrate (7) or they can be formed as discrete chips. Substantial quantities of alumina and glass can be added to the chrome oxide without affecting oxygen sensitivity although the electrical resistance rises substantially.
    • 氧传感器利用与二氧化钛感测电阻器(3)串联的氧化铬补偿电阻器(5)。 氧化铬电阻器(5)不仅补偿了二氧化钛感测(3)电阻器的温度影响,而且由于它呈现(p)型行为,而二氧化钛在气态氧气存在下表现出(n)型的行为, 传感器的灵敏度提高。 电阻器(3,5)可以作为薄膜施加到基板(7)上,或者它们可以形成为分立的芯片。 可以将大量的氧化铝和玻璃添加到氧化铬中,而不影响氧气的敏感性,尽管电阻显着上升。
    • 6. 发明授权
    • Temperature sensor
    • 温度感应器
    • US4419652A
    • 1983-12-06
    • US309877
    • 1981-10-09
    • Willard R. BalmforthDavid C. WeberMichael L. Gibbons
    • Willard R. BalmforthDavid C. WeberMichael L. Gibbons
    • G01K7/00G01K7/02G01K7/18H01C3/04
    • G01K7/02G01K7/00G01K7/183
    • A temperature sensor (1) having a thick or thin film forming a resistance temperature sensing element (13c), a thermocouple (13a, 13b) or a resistance temperature device (13d) applied to the outer surface of one end (5) of a dielectric, cylindrical support (3) having a continuous circumferential protuberance (11) about the middle portion (9) thereof which can be engaged by a metal fixturing shell (33). Film type electrodes (15) and (17) extend upwardly along the outside of the dielectric support to terminal grooves (28) on the other end (7). A dielectric coating (29) is applied over the electrodes (15) and (17) to provide electrical isolation from the metal shell (33). A coating (29") may also be applied over the sensors (13) to reduce corrosion and abrasion and to provide electrical insulation.
    • 具有形成电阻温度检测元件(13c)的厚膜或薄膜的温度传感器(1),施加到一端(5)的外表面的热电偶(13a,13b)或电阻温度装置(13d) 电介质圆柱形支撑件(3),其具有围绕其中间部分(9)的连续的周向突起(11),所述中间部分可由金属固定壳体(33)接合。 薄膜型电极(15)和(17)沿着电介质支撑体的外部向上延伸到另一端(7)上的端子槽(28)。 在电极(15)和(17)上施加电介质涂层(29)以提供与金属壳(33)的电隔离。 也可以在传感器(13)上施加涂层(29“)以减少腐蚀和磨损并提供电绝缘。
    • 7. 发明授权
    • Seal means for isolated grounded O.sub.2 sensor
    • 隔离接地O2传感器的密封方式
    • US4786399A
    • 1988-11-22
    • US102056
    • 1987-09-28
    • Harry P. WertheimerDavid C. Weber
    • Harry P. WertheimerDavid C. Weber
    • G01N27/409G01N27/403G01N27/407G01N27/416G01N27/46
    • G01N27/407G01N27/4062G01N27/4077G01N27/4078
    • A sensor (24) having a metal shell (30) joined to a sleeve (96) to locate a heater (92) in a thimble of an electrolyte member (72). A sealed joint is produced between the sleeve (96) and metal shell (30) to define a sealed reference chamber (118). A porous filter (112) in the sleeve (96) prevents water in environmental air from entering the reference chamber (118). Leads (106') and (106") which pass through a seal (123) adjacent the porous filter (112) are connected to terminals (164 and 164'). Terminals (164 and 164') located in a terminal member (120) position a heater (92) within chamber (118) and the electrolyte member (72). Leads (106 and 106.sup.n) which pass through the porous filter are connected to contact rings (142 and 144). Contact rings (142 and 144) are connected to an external and internal coating (80 and 82) on the electrolyte member (72). In response to a signal from a controller (26) electrical current is supplied to the heater (92) to maintain the temperature in chamber (118) above present limits such that changes in the ion conduction through the electrolyte member (72) is accurately measured. The changes result from a difference in the oxygen content of air in the reference chamber (118) as compared with oxygen in an exhaust gas supplied to the external surface (80). The seal (123) and filter (112) are free to move axially within the sleeve (96) while still maintaining radial engagement to assure that only dry environmental air is presented to the reference chamber (18).
    • 传感器(24)具有接合到套筒(96)的金属壳(30),以将加热器(92)定位在电解质构件(72)的套管中。 在套筒(96)和金属壳(30)之间产生密封接头以限定密封的参考室(118)。 套筒(96)中的多孔过滤器(112)防止环境空气中的水进入参考室(118)。 通过邻近多孔过滤器(112)的密封件(123)的引线(106')和(106“)连接到端子(164和164')。 位于端子构件(120)中的端子(164和164')将腔室(118)内的加热器(92)和电解质构件(72)定位。 通过多孔过滤器的引线(106和106n)连接到接触环(142和144)。 接触环(142和144)连接到电解质构件(72)上的外部和内部涂层(80和82)。 响应于来自控制器(26)的信号,电流被提供给加热器(92)以将室(118)中的温度保持在高于当前的极限,使得通过电解质构件(72)的离子传导的变化被精确测量 。 与供给到外表面(80)的废气中的氧相比,由于参考室(118)中的空气的氧含量的差异导致变化。 密封件(123)和过滤器(112)可自由地在套筒(96)内轴向移动,同时仍然保持径向接合,以确保只有干燥的环境空气被提供给参考室(18)。
    • 9. 发明授权
    • Holographic labeling and reading machine for authentication and security
applications
    • 全息标签和阅读机,用于认证和安全应用
    • US5920058A
    • 1999-07-06
    • US731948
    • 1996-10-23
    • David C. WeberJames D. Trolinger
    • David C. WeberJames D. Trolinger
    • G03H1/10G03H1/16G06K19/16G06K7/10
    • G03H1/0011G03H1/10G06K19/16G03H1/16G03H2001/0016G03H2001/0066G03H2260/54
    • A holographic security label and automated reading machine for marking and subsequently authenticating any object such as an identification badge, a pass, a ticket, a manufactured part, or a package is described. The security label is extremely difficult to copy or even to read by unauthorized persons. The system comprises a holographic security label that has been created with a coded reference wave, whose specification can be kept secret. The label contains information that can be extracted only with the coded reference wave, which is derived from a holographic key, which restricts access of the information to only the possessor of the key. A reading machine accesses the information contained in the label and compares it with data stored in the machine through the application of a joint transform correlator, which is also equipped with a reference hologram that adds additional security to the procedure.
    • 描述了用于标记和随后验证诸如识别徽章,通行证,票证,制造部件或包装之类的任何对象的全息安全标签和自动阅读机。 安全标签非常难以复制,甚至被未经授权的人员阅读。 该系统包括已经用编码的参考波创建的全息安全标签,其规范可以被保密。 该标签包含仅能够使用从全息键导出的编码参考波提取的信息,这限制了信息仅访问密钥的拥有者。 读取机访问标签中包含的信息,并通过应用联合变换相关器将其与存储在机器中的数据进行比较,该联合变换相关器还配备有对该过程增加额外安全性的参考全息图。