公开(公告)号：US3676680A

公开(公告)日：1972-07-11

申请号：US3676680D

申请日：1970-06-08

申请人： CERBERUS AG

发明人： SCHEIDWEILER ANDREAS ,  MEIER OTTO

IPC分类号： G08B17/11 ,  G01T1/18 ,  H01J39/28

CPC分类号： G08B17/11

摘要： An ionization fire alarm comprising a measuring ionization chamber which is connected in series with at least one resistance element, preferably constructed as a reference ionization chamber, at a voltage source. An electrical amplifier and/or threshold value detector circuit is also provided, the input of which is electrically coupled with the junction point of the measuring ionization chamber and the resistance element. According to an important aspect of the invention the electric circuit of the ionization fire alarm system is constructed such that a signal is released when the input potential exceeds an upper threshold value or drops below a lower threshold value.

摘要翻译： 一种电离火灾警报器，包括测量电离室，该测量电离室与电压源中的至少一个电阻元件串联连接，优选构成为参考电离室。 还提供电放大器和/或阈值检测器电路，其电路的输入与测量电离室和电阻元件的接合点电耦合。 根据本发明的一个重要方面，电离火灾报警系统的电路被构造成使得当输入电位超过上限阈值或低于低阈值时信号被释放。

公开(公告)号：US3450923A

公开(公告)日：1969-06-17

申请号：US53246866

申请日：1966-03-07

申请人： CERBERUS AG

发明人： BRUMM GERHARD

IPC分类号： H01J17/30 ,  H01J61/067 ,  H01T1/14 ,  H01T1/22 ,  H01T4/12 ,  H01J17/04

CPC分类号： H01T1/22 ,  H01J17/04 ,  H01J17/30 ,  H01J61/0672 ,  H01T1/14 ,  H01T4/12

摘要： 1,109,332. Cold-cathode tubes. CERBERUS A.G. 17 March, 1966 [17 March, 1965], No. 11688/66. Heading H1D. A gas-filled overvoltage protector tube includes a pair of opposed planar electrodes each of which has rounded edges, a thickness of not less than 1 mm., and major faces each having an area not less than 30 (mm.) 2 , the spacing between the electrodes, and their thermal capacity, being such as to ensure that, when the tube is loaded at 1000 watts with 10 amps r.m.s. current, a fusion bead forms at the surface of the electrodes to produce a shortcircuit prior to destruction of the hard glass envelope of the tube. Each electrode is preferably of nickel coated with calcium oxide and has a channel 3a, Fig. 1, in its rear face within which its lead-in wire 3 is staked (Fig. 3, not shown) and brazed. The filling is a mixture of argon, hydrogen and tritium at 80 torr. The tube has a polyethylene clip 12, Fig. 4, mounted on the exhaust tip end of the tube, two nickel channel members 10 extending along opposite sides of the tube, each having one end hooked in the clip and the other end spot-welded to the externally extending portion 7 of a respective lead-in pin, whereby the tube may be readily introduced into the contact spring fixture of a fuse-box.

公开(公告)号：US3233100A

公开(公告)日：1966-02-01

申请号：US24615262

申请日：1962-12-20

申请人： CERBERUS AG

发明人： THOMAS LAMPART

IPC分类号： G01N27/64 ,  G01N27/66 ,  G08B17/113 ,  H01J41/08

CPC分类号： G01N27/64 ,  G01N27/66 ,  G08B17/113 ,  H01J41/08

公开(公告)号：US5381130A

公开(公告)日：1995-01-10

申请号：US942141

申请日：1992-09-08

申请人： Marc Thuillard ,  Andreas Scheidweiler ,  Kurt Hess

发明人： Marc Thuillard ,  Andreas Scheidweiler ,  Kurt Hess

IPC分类号： G08B17/107 ,  G08B17/10

CPC分类号： G08B17/107

摘要： In a scattered-light smoke detector, for preventing false alarms due to extraneous matter in a measurement chamber (1), a radiation source (2) and two radiation detectors (7, 8) are included. An evaluation circuit is provided for comparing the two detector signals, and an alarm signal is triggered if at least one of the detector signals exceeds a predetermined threshold, and if the two detector signals are at least approximately equal. In another embodiment, a scattered-light smoke detector includes two radiation sources (2, 22), a radiation detector (7), and circuitry for alternatively activating one (2) or the other (22) radiation source. For comparison, corresponding detector signals are stored in sample-and-hold circuits, and an alarm signal can be triggered depending on the same tests. Furthermore, in both cases, a trouble signal can be produced if the two signals are significantly different.

摘要翻译： 在散射光检测器中，为了防止测量室（1）中的外来物质引起的假警报，包括辐射源（2）和两个辐射检测器（7,8）。 提供用于比较两个检测器信号的评估电路，并且如果至少一个检测器信号超过预定阈值，并且如果两个检测器信号至少近似相等，则触发报警信号。 在另一个实施例中，散射光烟雾探测器包括两个辐射源（2,22），辐射探测器（7）和用于交替激活一个（2）或另一个（22）辐射源的电路。 为了比较，相应的检测器信号存储在采样和保持电路中，并且可以根据相同的测试触发报警信号。 此外，在两种情况下，如果两个信号显着不同，则可以产生故障信号。

公开(公告)号：USD342213S

公开(公告)日：1993-12-14

申请号：US807903

申请日：1991-12-16

申请人： Hansruedi Fellmann

设计人： Hansruedi Fellmann

公开(公告)号：US5045702A

公开(公告)日：1991-09-03

申请号：US441362

申请日：1989-11-22

申请人： Kurt A. Mulleer

发明人： Kurt A. Mulleer

IPC分类号： G01J5/34 ,  G08B13/19 ,  G08B13/193

CPC分类号： G01J5/34 ,  G08B13/19 ,  G08B13/193 ,  Y10S250/01

摘要： A passive infrared intrusion detector provides improved intruder detection while using a single signal evaluation channel. Pyroelectric sensor element configurations include a diamond pattern with differentially opposed pairs of elements of opposite polarization connected in series for increased coverage and sensitivity.

摘要翻译： 被动红外入侵检测器在使用单个信号评估通道时提供了改进的入侵检测。 热电传感器元件配置包括金刚石图案，其具有相互偏离的具有相对极化元件的差分对置的对串联，以增加覆盖和灵敏度。

公开(公告)号：US4746910A

公开(公告)日：1988-05-24

申请号：US915057

申请日：1986-10-03

申请人： Gustav Pfister ,  Peter Wagli

发明人： Gustav Pfister ,  Peter Wagli

IPC分类号： G08B13/00 ,  G01V8/20 ,  G08B13/19 ,  G08B13/191 ,  G08B29/04 ,  G08B29/18 ,  G08B13/18

CPC分类号： G08B29/188 ,  G08B13/19 ,  G08B29/046 ,  Y10S250/01

摘要： For reducing the susceptibility to false alarms and for increasing the detection probability of a passive infrared detector, the actual signals obtained from a first sensor element are continuously compared in a correlator with reference or set signals stored in a read-only memory and/or with the actual signals obtained from a second sensor element monitoring the near region. The correlator delivers an output signal which corresponds to the correlation of both signals which are compared with one another. An alarm signal is triggered when the correlation exceeds a predetermined value, for instance 0.7, and the amplitude has reached a predetermined threshold. The infrared detector affords high security against giving of false alarms and a high detection probability, even in the presence of signals possessing a great amount of noise, but also delivers an alarm signal in the event the detector is attempted to be sabotaged, for instance by covering the inlet optical system.

摘要翻译： 为了降低对误报的敏感性并增加无源红外探测器的检测概率，从第一传感器元件获得的实际信号在相关器中连续地与存储在只读存储器中的参考或设置信号和/或与 从监测近区域的第二传感器元件获得的实际信号。 相关器递送一个输出信号，该输出信号对应于彼此进行比较的两个信号的相关。 当相关超过预定值（例如0.7）并且幅度已经达到预定阈值时，触发报警信号。 即使存在具有大量噪声的信号，红外检测器也能够提供高的安全性，不会产生假报警和高检测概率，而且在检测器被试图破坏的情况下也提供报警信号，例如通过 覆盖入口光学系统。

公开(公告)号：US4740701A

公开(公告)日：1988-04-26

申请号：US864321

申请日：1986-05-19

申请人： Alfred Wuthrich ,  Walter Meier

发明人： Alfred Wuthrich ,  Walter Meier

IPC分类号： G08B13/193 ,  G01J5/08 ,  G02B3/02

CPC分类号： G08B13/193 ,  Y10S250/01

摘要： An intrusion detector evaluates the infrared radiation emitted by an intruder within a closely defined zone or area by means of a virtual protective curtain. Uniform sensitivity independent of incident angle of the radiation is provided by a cylindrical Fresnel lens of small thickness, which divides the field of reception into sharply defined strips or elongate zones of substantially uniform sensitivity. The longitudinal axis of this Fresnel lens defines an arcuate sector of a circle whose radius is determined by the focal length in perpendicular direction, and an infrared sensor is arranged at the circular center point, i.e., the focal point of the curved Fresnel lens. One particularly advantageous embodiment of the intrusion detector includes a double sensor configuration, equipped with several sensor elements cooperating with one or more cylindrical Fresnel lenses, thus covering a number of separate zones for simultaneous radiation detection.

摘要翻译： 入侵检测器通过虚拟防护罩评估入侵者在紧密限定的区域或区域内发射的红外辐射。 独立于辐射入射角的均匀灵敏度由小厚度的圆柱形菲涅尔透镜提供，其将接收区域划分为具有基本均匀灵敏度的尖锐限定的条带或细长区域。 该菲涅尔透镜的纵向轴线限定了圆弧的圆弧形扇形，半径由垂直方向的焦距确定，红外线传感器设置在圆形中心点即弯曲菲涅尔透镜的焦点处。 入侵检测器的一个特别有利的实施例包括双传感器配置，其配备有与一个或多个圆柱形菲涅尔透镜协作的多个传感器元件，因此覆盖多个分离的区域以用于同时的辐射检测。

公开(公告)号：US4710629A

公开(公告)日：1987-12-01

申请号：US813508

申请日：1985-12-26

申请人： Kurt Muller ,  Walter Meier

发明人： Kurt Muller ,  Walter Meier

IPC分类号： G01J1/42 ,  G01V8/10 ,  G01V8/20 ,  G08B13/18 ,  G08B13/193 ,  G08B29/04 ,  G08B29/14 ,  G01J5/08

CPC分类号： G08B29/046 ,  G08B29/14 ,  Y10S250/01

摘要： In an infrared intrusion detector which evaluates the body radiation of an intruder by means of a dual radiation sensor having two sensor elements arranged in a differential circuit for emitting an alarm signal, a functional supervision and detection of an attempt at sabotage, e.g., by covering or spraying the entrance window, are achieved by asymmetric irradiation of the two sensor elements through the entrance window by a radiation source. The asymmetry can be achieved by disposing the radiation source outside the plane of symmetry of the sensor elements or by an asymmetrically disposed auxiliary reflector.

摘要翻译： 在红外入侵检测器中，通过具有布置在差分电路中的两个传感器元件的双重辐射传感器评估入侵者的身体辐射，用于发出报警信号，对破坏尝试进行功能监视和检测，例如通过覆盖 或喷射入口窗口通过辐射源通过入口窗口对两个传感器元件进行不对称照射来实现。 可以通过将辐射源设置在传感器元件的对称平面之外或通过不对称设置的辅助反射器来实现不对称性。

公开(公告)号：US4668635A

公开(公告)日：1987-05-26

申请号：US713274

申请日：1985-03-18

申请人： Martin Forster

发明人： Martin Forster

IPC分类号： G01N21/31 ,  G01N21/3504 ,  G01N21/78 ,  G01N33/00 ,  G01N21/35

CPC分类号： G01N33/004 ,  G01N21/783 ,  G01N2021/3129 ,  G01N21/3504 ,  G01N2201/128 ,  Y10T436/205831

摘要： Reactive gases like, for example reducing gases, specifically carbon monoxide, are detected in a gas mixture, particularly in air, with extremely high sensitivity and with high precision using a gas detector in which the attenuation of the intensity of an infrared radiation beam by a catalyst layer is utilized. Such catalyst layer contains at least one transition metal selected from at least one of the groups I, VII, and VIII of the Periodic Table of the Chemical Elements. Preferably, chemical elements are used having an atomic weight in the range of about 100 to about 205. The detection of carbon monoxide is particularly sensitive using a catalyst layer which substantially contains a metal capable of forming a carboncarbonyl compound with carbon monoxide. The sensitivity and precisionof detecting carbon monoxide and other reducing gases can be significantly increased by periodically exchanging the gas mixture to be investigated in a measuring chamber and replacing it with a pure reference gas from a reference chamber. The sensitivity and precision of the gas detection can be further increased by periodically alternating the temperature of the catalyst layer during such period of gas exchange. The alternating signal this obtained at an output of the gas detector can be evaluated for determining the concentration of the reactive or reducing gases in the investigated gas mixture.

摘要翻译： 诸如还原气体，特别是一氧化碳的反应性气体，在具有极高灵敏度和高精度的气体混合物，特别是空气中被检测，使用气体检测器，其中红外辐射束的强度衰减为 催化剂层被利用。 这种催化剂层含有至少一种选自化学元素周期表的I，VII和VIII族中至少一个的过渡金属。 优选地，使用原子量在约100至约205范围内的化学元素。使用基本上含有能够与一氧化碳形成碳羰基化合物的金属的催化剂层，一氧化碳的检测特别敏感。 通过在测量室中周期性地更换待研究的气体混合物并用参考室中的纯参考气体代替，可以显着提高检测一氧化碳和其他还原气体的灵敏度和精度。 通过在气体交换期间周期性地交替催化剂层的温度可以进一步提高气体检测的灵敏度和精度。 可以评估在气体检测器的输出处获得的交变信号，以确定所研究的气体混合物中的反应性或还原性气体的浓度。