公开(公告)号：US4088988A

公开(公告)日：1978-05-09

申请号：US694594

申请日：1976-06-10

Applicant: Philip H. Berger

Inventor： Philip H. Berger

IPC: B61B12/06 ,  G08B25/01 ,  G08B21/00

CPC classification number: G08B25/018 ,  B61B12/06

Abstract: A constant current generator supplies a constant current signal to a plurality of detectors and a reference resistance connected to an output line and a ground line. Each detector includes a reference resistor connected in series in the output line, and a sensor connected between the output and ground. Upon the incidence of an external stimulus, the sensor becomes conductive shunting out all resistance subsequent in circuit and causing a predictable voltage change at the output of the constant current generator. A trigger senses the voltage change and sends signals to cause operational signals to be sent as desired, for example, to shut down a personnel cable transport system (e.g., ski chair lift) and indicate the location of the external stimulus. A detector may be bypassed by placing a permanent magnet on or into its chassis. The constant current generator output is unaffected by changes in temperature.

Abstract translation: 恒定电流发生器向多个检测器提供恒定电流信号，以及连接到输出线和接地线的参考电阻。 每个检测器包括串联在输出线路中的参考电阻器，以及连接在输出和地之间的传感器。 在外部刺激的发生时，传感器变得导通地分流电路中的所有电阻并且在恒定电流发生器的输出端引起可预测的电压变化。 触发器感测电压变化并发送信号以根据需要发送操作信号，例如关闭人员电缆传输系统（例如滑雪椅升降机）并指示外部刺激的位置。 可以通过在其底盘上放置永磁体来绕过检测器。 恒定电流发生器输出不受温度变化的影响。

公开(公告)号：US3991413A

公开(公告)日：1976-11-09

申请号：US589570

申请日：1975-06-23

Applicant: Philip H. Berger

Inventor： Philip H. Berger

IPC: B61B12/06 ,  G08B25/01 ,  G08B21/00

CPC classification number: G08B25/018 ,  B61B12/06

Abstract: A constant current generator supplies a constant current signal to a plurality of detector means via an output and ground return line. The detector means include an electrical resistance in series circuit in the output line and a sensor connected between the ground return line and the output line optionally subsequent in electrical circuit to the resistance. The sensor means becomes electrically conductive in the presence of a stimulus. As a result, the total resistance and in turn the voltage at the output of the constant current generator changes to a predictable value indicative of the identity of the conducting sensor. A detector circuit senses the change in voltage and sends a detection signal to activate operation means.

Abstract translation: 恒定电流发生器通过输出和接地返回线向多个检测器装置提供恒定电流信号。 检测器装置包括输出线中的串联电路中的电阻和连接在接地返回线和输出线之间的传感器，其可选地随后在电路中与电阻相连。 传感器装置在刺激的存在下变得导电。 结果，恒定电流发生器的总电阻以及恒定电流发生器的输出端的电压变为表示导电传感器的身份的可预测值。 检测器电路检测电压变化并发送检测信号以激活操作装置。

公开(公告)号：US3691519A

公开(公告)日：1972-09-12

申请号：US3691519D

申请日：1970-08-10

Applicant: DAVID WOLF

Inventor： WOLF DAVID

IPC: G08B25/01 ,  G08G1/00 ,  H04L5/14 ,  G01R31/11

CPC classification number: H04L5/1423 ,  G08B25/018 ,  G08G1/00

Abstract: A signaling system designed primarily for use on limited access highways. A plurality of individual stations positioned along the right of way of a highway are connected to a master control by a coaxial cable. Each individual station consists of a means for varying the impedance of the coaxial cable to one of a selected number of different impedances including for example an open circuit, a short circuit, a partial open circuit and a partial short circuit. The stations of each are located at different distances along the length of the cable as for example every tenth of a mile. The cable is constantly monitored from the master control by pulse signals. Reflections of the pulse signals are displayed on an oscilloscope which is calibrated for an A scope visual display and indication of the particular station from which a pulse signal is reflected or partially reflected by an impedance mismatch. In a modification, in place of a coaxial cable with individual stations there is provided a parallel pair of normally spaced wires supported by a dielectric whereby the conductive wires may be moved toward one another to change the characteristic impedance at a given location.

Abstract translation: 主要用于有限接入高速公路的信号系统。 沿着高速公路的右侧定位的多个单独的站通过同轴电缆连接到主控制器。 每个单独的站包括用于将同轴电缆的阻抗改变成选定数量的不同阻抗之一的装置，包括例如开路，短路，部分开路和部分短路。 每个站的电台位于电缆长度不同的距离，例如每十分之一英里。 电缆通过脉冲信号从主控器持续监控。 脉冲信号的反射显示在示波器上，该示波器被校准为A范围可视显示器，并且特定站点的指示，脉冲信号由该示波器反射或部分地被阻抗失配反射。 在一个变型中，代替具有各个站的同轴电缆，提供了由介电体支撑的平行的一对常规间隔的导线，由此导电线可以彼此移动以改变给定位置处的特性阻抗。

公开(公告)号：US3676877A

公开(公告)日：1972-07-11

申请号：US3676877D

申请日：1971-04-07

Applicant: MITTAN CO LTD

Inventor： KOBAYASHI TETSUO

IPC: G08B17/00 ,  G08B25/01 ,  G08B17/06

CPC classification number: G08B25/018 ,  G08B17/00

Abstract: A fire alarm system having a plurality of detectors operably to actuate a single receiver to sound an alarm upon the presence of fire, said detectors each having a zener diode interposed in the conduction path so that at least part of the current flows through the zener diode, each zener diode having a voltage differing from the zener diodes of the other detectors and said receiver including means sensing the specific zener diode voltage of an actuated detector in order to determine the detector that has been actuated.

Abstract translation: 一种火灾报警系统，其具有多个检测器，可操作地致动单个接收器以在存在火灾时发出报警，所述检测器各自具有置于导电路径中的齐纳二极管，使得至少部分电流流过齐纳二极管 每个齐纳二极管具有不同于其它检测器的齐纳二极管的电压，并且所述接收器包括检测致动检测器的特定齐纳二极管电压的装置，以便确定已被致动的检测器。

公开(公告)号：US3588889A

公开(公告)日：1971-06-28

申请号：US3588889D

申请日：1968-06-26

Applicant: DUTTON HAYWARD H ,  SCHULEIN JOSEPH ,  SCHULEIN MARGARET A

Inventor： SCHULEIN JOSEPH

IPC: G08B25/01 ,  G08B29/00

CPC classification number: G08B25/018

Abstract: AN ELECTRICAL SIGNALING SYSTEM INCLUDING A NONVOLTAGEGENERATING CHANGEABLE VALUE IMPEDANCE DEVICE WHICH IS ACTUATABLE TO PRODUCE AT A PAIR OF OUTPUT TERMINALS DIFFERENT SELECT IMPEDANCE VALUES, AND AN ANALYZING CIRCUIT REMOTE FROM AND CONNECTED TO THE DEVICE WHICH PRODUCES DIFFERENT OUTPUT SIGNALS IN RESPONSE TO DIFFERENT IMPEDANCE VALUES PRODUCED AT THE OUTPUT TERMINALS OF THE DEVICE. A SINGLE DC VOLTAGE SOURCE LOCATED ADJACENT THE ANALYZING CIRCUIT SUPPLIES ALL ELECTRICAL POWER REQUIRED IN THE SYSTEM.

公开(公告)号：US3553730A

公开(公告)日：1971-01-05

申请号：US58099266

申请日：1966-09-21

Applicant: MOSLER RESEARCH PRODUCTS INC

Inventor： KAPLAN MARTIN ,  HANSEN DONALD E ,  QUIST ERIC G

IPC: G08B13/22 ,  G08B25/01 ,  G08B13/00 ,  G08B13/08 ,  H03K3/26

CPC classification number: G08B25/018 ,  G08B13/22

Abstract: A SYSTEM FOR PROVIDING A CENTRAL STATION WITH AN INDICATION OF UNAUTHORIZED ACTIVITY AT A REMOTE PROTECTED ARE WHICH INCLUDES A PULSE GENERATOR AT THE REMOTE AREA. THE PULSE GENERATOR TRANSMITS TO THE CENTRAL STATION DURING NONALARM CONDITIONS PULSES HAVING PRE-DETERMINED PEAK AND BASE AMPLITUDES FALLING WITHIN AN ACCEPTANCE BAND AND HAVING A SPECIFIED PULSE WIDTH TO PULSE SPACING RATIO. SHOULD AN INTRUSION OCCUR THE PULSE WIDTH TO SPACING RATIO OF THE GENERATOR OUTPUT CHANGES. A DETECTOR AT THE CENTRAL STATION INTERCONNECTING THE PULSE GENERATOR AND AN ALARM INDICATOR MONITORS THE PULSE PEAK AND BASE AMPLITUDES TO ASCERTAIN WHETHER THE PULSES FALL WITHIN THE ACCEPTANCE BAND AND TO THEREBY DETECT TAMPERING, AS WELL AS MONITORS THE AVERAGE DIRECT CURRENT LEVEL OF THE PULSES TO ASCERTAIN THE EXISTENCE OF AN INTRUSION.

公开(公告)号：US3225341A

公开(公告)日：1965-12-21

申请号：US33878764

申请日：1964-01-20

Applicant: POTTER ELECTRIC SIGNAL COMPANY

Inventor： DEVINE PATRICK J

IPC: G08B23/00 ,  G08B25/01

CPC classification number: G08B23/00 ,  G08B25/018

公开(公告)号：US20110234401A1

公开(公告)日：2011-09-29

申请号：US12894257

申请日：2010-09-30

Applicant: Eric Bullmore

Inventor： Eric Bullmore

IPC: G08B21/00

CPC classification number: G08B21/18 ,  G08B13/22 ,  G08B17/10 ,  G08B23/00 ,  G08B25/018 ,  G08B25/14 ,  G08B29/22

Abstract: The circuit monitoring device is disclosed. The device is for monitoring circuit resistance. At configurable thresholds digital flags are triggered, the device can be used as a Security/Building management system. The device uses open technology is fully scaleable and allows programmable logic controllers to be used as security management systems. Using a soft logic option a PC could take the place of the PLC.

Abstract translation: 公开了电路监视装置。 该器件用于监视电路电阻。 在可配置的阈值下触发数字标志，该设备可用作安全/建筑物管理系统。 该设备使用开放技术是完全可扩展的，并允许可编程逻辑控制器用作安全管理系统。 使用软逻辑选项，PC可以代替PLC。

公开(公告)号：US20100232080A1

公开(公告)日：2010-09-16

申请号：US12738088

申请日：2008-08-26

Applicant: Harald Schermann ,  Karlheinz Schreyer

Inventor： Harald Schermann ,  Karlheinz Schreyer

IPC: H02H3/20

CPC classification number: G08B25/045 ,  G08B25/018 ,  G08B25/04 ,  G08B26/005

Abstract: A separating device for an energy-conducting electric lead includes a monitoring unit for checking the electric properties of a lead section of the lead adjacent to the separating device, an energy storage device that is coupled to the monitoring unit such that the function of the monitoring unit can also be maintained in case of a failure of the lead, and a switching element, which is coupled to the monitoring unit and which is equipped such that in case of a failure of the lead the adjacent lead section can be separated. The disclosure further relates to an energy supply system and to a method for providing electric energy from a control center to a plurality of electric devices via an energy-conducting electric lead having at least one such separating device.

Abstract translation: 用于导电电引线的分离装置包括用于检查与分离装置相邻的引线的引线部分的电特性的监测单元，耦合到监测单元的能量存储装置，使得监测功能 在引线故障的情况下也可以维持单元;以及开关元件，其连接到监控单元并且被配备为使得在导线的故障的情况下相邻的引线部分可以分离。 本公开还涉及一种能量供应系统以及通过具有至少一个这种分离装置的导电电导线从控制中心向多个电气装置提供电能的方法。

公开(公告)号：US20080007415A1

公开(公告)日：2008-01-10

申请号：US11777939

申请日：2007-07-13

Applicant: Eric BULLMORE

Inventor： Eric BULLMORE

IPC: G08B21/18

CPC classification number: G08B21/18 ,  G08B13/22 ,  G08B17/10 ,  G08B23/00 ,  G08B25/018 ,  G08B25/14 ,  G08B29/22

Abstract: The circuit monitoring device is disclosed. The device is for monitoring circuit resistance. At configurable thresholds digital flags are triggered, the device can be used as a Security/Building management system. The device uses open technology is fully scaleable and allows programmable logic controllers to be used as security management systems. Using a soft logic option a PC could take the place of the PLC.

Abstract translation: 公开了电路监视装置。 该器件用于监视电路电阻。 在可配置的阈值下触发数字标志，该设备可用作安全/建筑物管理系统。 该设备使用开放技术是完全可扩展的，并允许可编程逻辑控制器用作安全管理系统。 使用软逻辑选项，PC可以代替PLC。