公开(公告)号：US20070296416A1

公开(公告)日：2007-12-27

申请号：US11807632

申请日：2007-05-30

申请人： Young-Sik Lee ,  Gye-Hyun Cho

发明人： Young-Sik Lee ,  Gye-Hyun Cho

IPC分类号： G01R31/24

CPC分类号： H05B41/2985 ,  G01R31/44

摘要： A circuit for detecting the end of life of a fluorescent lamp is provided. In this circuit, a rectifier rectifies a voltage signal detected from a ballast. A phase detector detects the phase of the voltage signal and outputs at least one phase detection signal. A signal separator separates the rectified voltage on a phase basis to generate first and second voltage signals in response to the phase detection signal. A first maximum level detector detects the maximum level of the first voltage signal. A second maximum level detector detects the maximum level of the second voltage signal. A first comparison unit compares the first and second maximum levels and detects whether or not the difference is higher than a predetermined allowable level. A controller determines whether or not the fluorescent lamp is at the end of life in response to the detection from the first comparison unit.

摘要翻译： 提供一种用于检测荧光灯寿命的电路。 在该电路中，整流器对从镇流器检测到的电压信号进行整流。 相位检测器检测电压信号的相位并输出至少一个相位检测信号。 信号分离器基于相位分离整流电压，以响应于相位检测信号产生第一和第二电压信号。 第一最大电平检测器检测第一电压信号的最大电平。 第二最大电平检测器检测第二电压信号的最大电平。 第一比较单元比较第一和第二最大电平，并且检测差是否高于预定的允许电平。 控制器响应于来自第一比较单元的检测来确定荧光灯是否处于寿命结束。

公开(公告)号：US5528147A

公开(公告)日：1996-06-18

申请号：US269467

申请日：1994-06-30

申请人： John G. Konopka

发明人： John G. Konopka

IPC分类号： G01R31/24 ,  G01R31/00

CPC分类号： G01R31/245

摘要： A capacitor (16) coupled in series with series coupled gas discharge lamps (11 and 12) will effectively block direct current from flowing through the capacitor (16). A detector circuit including a high impedance resistor (17) and transistor (18) provide an alternate path for a small direct current flow, thereby enabling a direct current voltage across the capacitor (16) to be detected. The presence or absence of this direct current voltage provides a reliable indicia of the existence or absence of a gas discharge fault.

摘要翻译： 与串联气体放电灯（11和12）串联耦合的电容器（16）将有效地阻止直流电流流过电容器（16）。 包括高阻抗电阻器（17）和晶体管（18）的检测器电路提供用于小直流电流的交替路径，由此能够检测电容器（16）两端的直流电压。 这种直流电压的存在或不存在提供气体放电故障的存在或不存在的可靠指示。

公开(公告)号：US5381131A

公开(公告)日：1995-01-10

申请号：US82856

申请日：1993-06-28

申请人： Mikio Mochizuki ,  Hideo Ito ,  Ryousaku Kobayashi

发明人： Mikio Mochizuki ,  Hideo Ito ,  Ryousaku Kobayashi

IPC分类号： G01R31/24 ,  G08B29/04 ,  H05B37/03 ,  G08B17/10

CPC分类号： H05B37/03 ,  G01R31/245 ,  G08B29/043

摘要： A smoke detecting apparatus includes a lamp, a light receiving element for receiving light from the lamp, and a smoke detecting circuit for detecting the smoke density in accordance with the signal outputted from the light receiving element. The apparatus further includes a light emission failure detector and counter for detecting a light emission failure in which the lamp fails to emit light in response to a light emission instruction from the smoke detecting and counting light emission failures, and a memory for storing the number of light emission failures. The apparatus may further include a warning unit which, when the number of failures becomes a predetermined value or more, warns that the lamp will soon be exhausted. Thus, the unit enables a maintenance person to replace the lamp without fail before it is exhausted.

摘要翻译： 烟雾检测装置包括灯，用于接收来自灯的光的光接收元件和用于根据从光接收元件输出的信号检测烟浓度的烟检测电路。 该装置还包括发光故障检测器和计数器，用于响应于来自烟雾检测和计数发光故障的发光指令，检测灯不能发光的发光故障，以及用于存储数量的存储器 发光故障。 该装置还可以包括警告单元，当故障次数达到预定值或更多时，警告灯将很快耗尽。 因此，该单元使得维护人员在耗尽之前能够不经意地更换灯泡。

公开(公告)号：US5369363A

公开(公告)日：1994-11-29

申请号：US902730

申请日：1992-06-23

申请人： Bill L. Hey

发明人： Bill L. Hey

IPC分类号： G01R31/44 ,  G01R31/24 ,  G01R31/02

CPC分类号： G01R31/44

摘要： An implement for removing from its socket and testing a Christmas light bulb which has a handle with two opposite ends. The handle has a cap secured to one of the ends. The cap has a socket in its distal end and the socket is adapted to loosely receive the base of a bulb. A cavity is formed in the other of the ends. The cavity has a top and a pair of opposite side walls that extend toward the other end, and a bottom. A bulb gripper is provided in the bottom for gripping the base of a bulb. A battery is housed in the handle. The battery is easily accessible so that it can be removed and replaced as desired. The battery and the cap are electrically connected. The handle cooperatively attaches the cap and the cavity and the gripper so that the bulb can be positioned in the cavity and the gripper can grip the base to the bulb from its socket without separating the bulb from its base. The bulb then can be loosely positioned in the socket and tested.

摘要翻译： 一种用于从其插座中移除并测试具有两个相对端的手柄的圣诞灯泡的工具。 手柄具有固定到其中一个端部的盖。 盖在其远端具有插座，并且插座适于松动地接收灯泡的基座。 在另一端形成空腔。 空腔具有朝向另一端延伸的顶部和一对相对的侧壁以及底部。 在底部设有灯泡夹持器，用于夹持灯泡的底座。 手柄中装有电池。 电池容易接近，以便根据需要可以拆卸和更换电池。 电池和盖子电连接。 手柄协调地将盖和腔和夹具连接起来，使得灯泡可以定位在空腔中，并且夹具可以从其插座将基座夹持到灯泡，而不将灯泡与其底座分离。 然后灯泡可以松动地放置在插座中并进行测试。

公开(公告)号：US5086276A

公开(公告)日：1992-02-04

申请号：US696659

申请日：1991-05-07

申请人： Yan M. Li ,  A. Bowman Budinger ,  Wojciech W. Byszewski ,  Philip Gregor ,  William M. Keeffe

发明人： Yan M. Li ,  A. Bowman Budinger ,  Wojciech W. Byszewski ,  Philip Gregor ,  William M. Keeffe

IPC分类号： G01R31/24 ,  H01J9/42

CPC分类号： H01J9/42 ,  G01R31/245

摘要： The present disclosure describes a method for determining the condensate location within an HID lamp. The method involves monitoring current and voltage waveforms during the glow phase of lamp starting. If the voltage drop during the glow phase is low with a corresponding high current, then the volatile component of the lamp fill has condensed on the electrodes during the previous cool down period. If the voltage drop is high and current is low then most of the condensate has localized on the arc tube wall. An automated detection apparatus is used to carry out the measurements to determine condensate location.

摘要翻译： 本公开描述了一种用于确定HID灯内的冷凝物位置的方法。 该方法包括在灯启动的辉光阶段监视电流和电压波形。 如果在辉光相期间的电压降为相应的高电流，则在先前的冷却期间，灯填充物的挥发性成分在电极上会聚。 如果电压降高且电流低，则大部分冷凝物已经位于电弧管壁上。 使用自动检测装置进行测量以确定冷凝物的位置。

公开(公告)号：US4894611A

公开(公告)日：1990-01-16

申请号：US186963

申请日：1988-04-27

申请人： Isamu Shimoda ,  Mamoru Miyawaki ,  Akira Suzuki ,  Tetsuya Kaneko ,  Takeo Tsukamoto ,  Toshihiko Takeda ,  Masahiko Okunuki

发明人： Isamu Shimoda ,  Mamoru Miyawaki ,  Akira Suzuki ,  Tetsuya Kaneko ,  Takeo Tsukamoto ,  Toshihiko Takeda ,  Masahiko Okunuki

IPC分类号： G01R31/26 ,  G01R31/24 ,  H01J9/42 ,  H01J37/06

CPC分类号： G01R31/24

摘要： A measuring system particularly suitably usable with an apparatus having a plurality of electron emitting sources, for measuring the characteristics of the electron emitting sources is disclosed. In the measuring system, the electron emitting sources are driven so that they emit electron flows of predetermined and different frequencies. The emitted electron flows are collected and, thereafter, only those signals having components corresponding to the predetermined frequencies are extracted. Based on the extracted signals, the characteristics of the electron emitting sources are measured at the same time and independently of each other.

摘要翻译： 公开了一种特别适用于具有多个电子发射源的装置的测量系统，用于测量电子发射源的特性。 在测量系统中，电子发射源被驱动，使得它们发射预定和不同频率的电子流。 收集发射的电子流，然后仅提取具有与预定频率对应的分量的那些信号。 基于所提取的信号，电子发射源的特性同时并且彼此独立地被测量。

公开(公告)号：US4779739A

公开(公告)日：1988-10-25

申请号：US327340

申请日：1981-12-04

申请人： William E. Carl ,  Ronald W. McGohon

发明人： William E. Carl ,  Ronald W. McGohon

IPC分类号： B07C5/344 ,  G01R31/24

CPC分类号： B07C5/344

摘要： The apparatus is used for detecting the proper conductivity of a conductive film enclosed within a nonconductive substrate or envelope such as a fluorescent lamp without requiring physical contact with the fluorescent lamp. The conductive film detector comprises a capacitive proximity switch mounted close to but spaced from the lamp as the lamp passes the inspection station. At the inspection station there is also provided a feeler switch for sensing lamp presence and a cam switch for inspection initiation when the lamp is instantaneously properly positioned. A control unit powers the capacitive proximity switch and receives the proximity switch output to control a lamp rejection mechanism for rejecting lamps having resistance that is too high. The set up procedure involved adjustment of the capacitive proximity switch sensitivity by using test lamps of alternately acceptable resistance and unacceptable resistance, along with adjustment of lamp-to-proximity switch spacing.

摘要翻译： 该装置用于检测封装在诸如荧光灯的非导电衬底或外壳内的导电膜的适当导电性，而不需要与荧光灯物理接触。 导电膜检测器包括当灯通过检查台时靠近但与灯间隔开的电容式接近开关。 在检查站，当灯被瞬间正确定位时，还提供了用于检测灯的存在的触发开关和用于检查开始的凸轮开关。 控制单元为电容式接近开关供电并接收接近开关输出以控制用于排除具有太高电阻的灯的灯排斥机构。 设置步骤包括通过使用交替可接受的电阻和不可接受电阻的测试灯以及调节灯对接近开关间距来调整电容式接近开关灵敏度。

公开(公告)号：US4697075A

公开(公告)日：1987-09-29

申请号：US850515

申请日：1986-04-11

申请人： Hartog J. Roos ,  Edward F. Schilling

发明人： Hartog J. Roos ,  Edward F. Schilling

IPC分类号： H05G1/64 ,  A61B6/00 ,  G01M11/00 ,  G01N23/04 ,  G01R31/24 ,  G03B42/00 ,  H01J31/50 ,  H05G1/26 ,  H05G1/60

CPC分类号： H05G1/26 ,  A61B6/583 ,  H05G1/60

摘要： An image evaluation apparatus for quantitative and qualitative evaluation of an optical image generated by an x-ray imaging system of the type including an x-ray source, an image intensifier tube for converting received x-ray radiation to optical images to be recorded photographically and/or electronically. The evaluation apparatus comprises an image projection device in the form of a cylindrical housing having a lens mounted in one end and a light diffuser mounted in a second end. The lens is of the type having a focal point at infinity such that all of the light passing through the lens is substantially parallel. The evaluation apparatus is mounted to the x-ray imaging system in a position normally occupied by one of the recording or display apparatus so as to be in a position for receiving light generated by the optical image on the image intensifier tube. The received light is focused onto the diffuser and its intensity is measured using a light photometer. The intensity distribution measurement on the diffuser provides an indication of the performance of the imaging system including the intensifier tube and associated optical transmission elements in the light transmission path.

公开(公告)号：US4184111A

公开(公告)日：1980-01-15

申请号：US928128

申请日：1978-07-26

申请人： Alan M. Acting Administrator of the National Aeronautics and Space Administration, with respect to an invention of Lovelace ,  Gary B. Turner

发明人： Alan M. Acting Administrator of the National Aeronautics and Space Administration, with respect to an invention of Lovelace ,  Gary B. Turner

IPC分类号： G01R13/04 ,  G01R31/26 ,  G01R31/24

CPC分类号： G01R31/2603 ,  G01R13/04 ,  H02S50/10 ,  Y10S136/29

摘要： A bipolar voltage ramp generator applies a linear voltage through a resistor to a solar cell for plotting its current versus voltage (I-V) characteristic between short circuit and open circuit conditions, with automatic stops at the end points. The resistor serves the multiple purpose of providing a current sensing resistor, setting the full-scale current value, and providing a load line with a slope approximately equal to one, such that it will pass through the origin and the approximate center of the I-V curve with about equal distance from that center to each of the end points.

摘要翻译： 双极性电压斜坡发生器通过电阻器将线性电压施加到太阳能电池，以在短路和开路条件之间绘制其电流对电压（I-V）特性，并在端点自动停止。 电阻器用于提供电流感测电阻器，设定满量程电流值，以及提供具有大约等于1的斜率的负载线的多个目的，使得其将通过IV曲线的原点和近似中心 距离该中心距离每个终点大约相等。

公开(公告)号：US4145142A

公开(公告)日：1979-03-20

申请号：US855531

申请日：1977-11-28

申请人： Carl H. Mikeman

发明人： Carl H. Mikeman

IPC分类号： G01M11/00 ,  G01R31/25 ,  G01J1/10 ,  G01D18/00 ,  G01R31/24 ,  H01J39/12

CPC分类号： G01R31/257 ,  G01M11/00

摘要： A beam from a test image is split into two paths. The beam in one path may pass through broad-band or narrow-band attenuators to the intensifier being tested. A portion of the beam in the other path passes through a hole in a reflector to the eye of a viewer. The intensifier provides an output beam, and this beam is reflected by the reflector to the eye of the view. The viewer thus sees an image that may have a lighter or darker portion, depending on whether the output beam from the intensifier is brighter or dimmer than the test image. Various attenuators may be inserted in the one optical path to provide tests of such things as intensifier gain, relative gain, or EBI on a go/no go basis.

摘要翻译： 来自测试图像的光束被分成两条路径。 一个路径中的光束可以通过宽带或窄带衰减器到被测试的增强器。 另一路径中的光束的一部分穿过反射器中的孔到观察者的眼睛。 增强器提供输出光束，并且该光束被反射器反射到视野的眼睛。 因此，观看者可以看到可能具有较浅或较暗部分的图像，这取决于来自增强器的输出光束是否比测试图像更亮或更暗。 可以在一个光路中插入各种衰减器，以提供诸如增强器增益，相对增益或EBI的测试。