公开(公告)号：US3939460A

公开(公告)日：1976-02-17

申请号：US463713

申请日：1974-04-24

申请人： Barry N. Horn ,  Richard S. Swain ,  Richard C. Rice

发明人： Barry N. Horn ,  Richard S. Swain ,  Richard C. Rice

IPC分类号： G08B25/00 ,  G08B26/00

CPC分类号： G08B26/006 ,  G08B25/00

摘要： Fire alarm and intrusion alarm conductors are wired from a plurality of dwellings to a nearby data transmitter circuit which is linked by a single pair of conductors to a remote data receiver circuit. The alarm conductors are sequentially scanned in the data transmitter circuit by a binary counter which sequentially enables or opens gates that are coupled to the alarm conductors. When an alarm condition is detected on one of the alarm conductors, the scanning counter is stopped and the counter number is converted from parallel form to serial form. The serial number is transmitted from the data transmitter circuit to the data receiver circuit. The least significant bit of the number signifies whether the alarm is a fire or an intrusion. The remaining bits signify the location. In the receiver circuit, the received data is converted back to parallel form and is printed out on a printer. The transmitted data includes a first bit which is always a binary 1 and a last bit which is always a binary zero. The first bit starts the serial to parallel converter in the receiver circuit and the last bit insures that the output of the parallel to serial converter in the transmitter circuit is left in the low state after the transmission is completed. The data is preferably transmitted from the transmitter circuit to the receiver circuit by frequency shift keying. The data is clocked out of the parallel to serial converter and into the serial to parallel converter by clock pulses which are derived by dividing down the frequency of the frequency shift keying carrier.

摘要翻译： 火灾报警和入侵报警导体从多个住宅接线到由一对导体链接到远程数据接收器电路的附近数据发射机电路。 报警导体通过二进制计数器在数据发送器电路中顺序地扫描，该二进制计数器依次启用或打开耦合到报警导体的门。 在其中一个报警导体上检测到报警条件时，扫描计数器停止，计数器编号从并行形式转换为串行形式。 序列号从数据发送电路传输到数据接收电路。 数字的最低有效位表示报警是火还是入侵。 剩余的位表示位置。 在接收机电路中，接收到的数据被转换成并行形式，并被打印在打印机上。 发送的数据包括总是二进制1的第一位和总是二进制零的最后一位。 第一位在接收机电路中启动串行到并行转换器，最后一位确保发送器电路中的并行到串行转换器的输出在传输完成后保持在低电平状态。 数据优选地通过频移键控从发射机电路发送到接收机电路。 数据通过时钟脉冲从并行到串行转换器的时钟脉冲输出到串并转换器中，时钟脉冲是通过分频频移键控载波的频率得出的。

公开(公告)号：US3760394A

公开(公告)日：1973-09-18

申请号：US3760394D

申请日：1972-02-04

申请人： NASA ,  HANNA M

发明人： FLETCHER J

IPC分类号： G08B26/00 ,  G08B23/00

CPC分类号： G08B26/006

摘要： An event sequence detector is disclosed comprising a plurality of input units, each associated with a row of bistable elements arranged in an array of rows and columns. The detector also includes a shift register which is responsive to clock pulses from any of the units to sequentially provide enabling signals on its output lines each of which is connected to the bistable elements in a corresponding column. When an event-indicating signal is received by an input unit it provides a clock pulse to the shift register to provide the enabling signal on one of its output lines. The input unit also enables all its bistable elements so that the particular element in the column supplied with the enabling signal from the register is driven to an eventindicating state.

公开(公告)号：US3713103A

公开(公告)日：1973-01-23

申请号：US3713103D

申请日：1971-06-29

申请人： GTE AUTOMATIC ELECTRIC LAB INC

发明人： RISKY F

IPC分类号： G08B26/00 ,  H02H3/04 ,  H04Q1/00

CPC分类号： G08B26/006

摘要： A scanpoint matrix for monitoring the state of remote contacts includes an array of scanpoints arranged in rows and columns. A driver is coupled in parallel to each scanpoint in a row and output means are coupled in parallel to each scanpoint in a column. Each scanpoint is coupled to a remote contact to be monitored and includes a voltage divider and a diode which is reverse biased when the remote contact is open and which acts as a shunt when the remote contact is closed.

摘要翻译： 用于监视远程联系人状态的扫描点矩阵包括以行和列排列的扫描点阵列。 驱动器并行耦合到一行中的每个扫描点，并且输出装置并行耦合到列中的每个扫描点。 每个扫描点耦合到待监视的远程触点，并且包括分压器和二极管，当远程触点断开时，二极管被反向偏置，并且当远程触点闭合时用作分流器。

公开(公告)号：US3705401A

公开(公告)日：1972-12-05

申请号：US3705401D

申请日：1972-02-11

申请人： FRANCIS A SCOTT

发明人： SCOTT FRANCIS A

IPC分类号： G08B26/00 ,  G08B19/00

CPC分类号： G08B26/006

摘要： A plurality of protected stations connected by transmission lines to a central monitoring station. Each protected station has a condition sensing device capable of transmitting an abnormal condition signal to the monitoring station where all the protected stations are simultaneously monitored by a master signal detector. The monitoring station also has an individual signal detector and a selector switch so that an abnormal condition signal from any particular protected station may be monitored by the individual detector in exclusion of all the other protected stations which are monitored by the master detector.

公开(公告)号：US3529292A

公开(公告)日：1970-09-15

申请号：US3529292D

申请日：1966-10-31

申请人： HOWARD AIKEN IND INC

发明人： NEILL DANIEL L ,  ROBERTS GORDON A ,  BUTLER THOMAS W

IPC分类号： B60R16/02 ,  B60R16/03 ,  G08B26/00

CPC分类号： G08B26/006 ,  B60R16/0315

公开(公告)号：US3387091A

公开(公告)日：1968-06-04

申请号：US40133864

申请日：1964-10-05

申请人： AMERICAN TELEPHONE & TELEGRAPH

发明人： DEIKER ROBERT W

IPC分类号： G08B26/00 ,  H04M3/08 ,  H04M3/24

CPC分类号： G08B26/006 ,  H04M3/08 ,  H04M3/248

公开(公告)号：US3188621A

公开(公告)日：1965-06-08

申请号：US20327462

申请日：1962-06-18

申请人： SPERRY RAND CORP

发明人： COGAR GEORGE R ,  NEDDENRIEP DONALD O ,  SEVILLA ERNESTO G ,  MASTERSON EARL E

IPC分类号： G09F11/22 ,  G06F11/32 ,  G08B5/22 ,  G08B19/00 ,  G08B26/00 ,  G09F11/00 ,  G09F11/235 ,  G21C17/04 ,  H03K17/76

CPC分类号： H03K17/76 ,  G06F11/32 ,  G08B5/22 ,  G08B19/00 ,  G08B26/006 ,  G09F11/235 ,  G21C17/04

公开(公告)号：US09747782B2

公开(公告)日：2017-08-29

申请号：US14428774

申请日：2013-03-13

申请人： Apollo Fire Detectors Limited

发明人： Jeff Cutler

IPC分类号： G08B26/00 ,  H04L12/403 ,  H04L29/08

CPC分类号： G08B26/008 ,  G08B26/004 ,  G08B26/006 ,  H04L12/403 ,  H04L67/12

摘要： A wired data communications network for use in a building for the detection of fire or intrusion, the network including a control unit connected by cable to a series of uniquely addressable transducers for the transmission and reception of data in a polling signal. Each transducer has a memory for control data and for its own unique address and responds to a predetermined start voltage pulse in the polling signal to clear its memory and then responds to control data and address data in the polling signal to store the control data when the address matches its own address and transmit data to the control unit representative of its own status. At least one of the transducers determines whether the control data is extended data and, if so, stores the extended control data and the further control data, and performs the said transmission of data to the control unit and any other process dictated by the extended control data.

公开(公告)号：US4567471A

公开(公告)日：1986-01-28

申请号：US521615

申请日：1983-08-08

申请人： Mustafa Acar

发明人： Mustafa Acar

IPC分类号： G08B25/01 ,  G08B26/00 ,  G08B29/00

CPC分类号： G08B25/018 ,  G08B26/006

摘要： A monitoring system for a protection loop that has a plurality of switches in series utilizes modules with inexpensive diodes and resistors, and is conveniently and easily added to existing burglar alarm circuits and loops. A monitoring module that includes a diode and a paralleled resistor is connected across each switch. First and second interrogating signals are alternately applied to the protection loop. First comparator circuit means provides an output in response to each first interrogating signal when one of the monitored switches in the protection loop is open as indicated by the response of the module resistors; and second comparator circuit means provides an output in response to each second interrogating signal when more than one of the monitored switches in the protection loop is open as indicated by the response of the module diodes.

摘要翻译： 具有串联的多个开关的保护回路的监视系统利用具有便宜的二极管和电阻器的模块，并且方便且容易地添加到现有的防盗报警电路和回路中。 包括二极管和并联电阻器的监控模块连接在每个开关上。 第一和第二询问信号交替地施加到保护回路。 第一比较器电路装置响应于每个第一询问信号提供输出，当保护回路中的一个被监视的开关如模块电阻器的响应所示那样打开时; 而如果保护回路中的一个以上的被监视的开关中的一个被打开，则第二比较器电路装置响应于每个第二询问信号提供输出，如模块二极管的响应所示。

公开(公告)号：US4533834A

公开(公告)日：1985-08-06

申请号：US446143

申请日：1982-12-02

申请人： Ray G. McCormack

发明人： Ray G. McCormack

IPC分类号： F23N5/08 ,  G08B17/12 ,  G08B26/00

CPC分类号： F23N5/082 ,  G08B17/12 ,  G08B26/006 ,  F23N2023/08 ,  F23N2029/08 ,  Y02T50/677

摘要： A fire detection system using optical fibers to transmit flame signals from a plurality of remote monitoring stations to a central detection and analysis station, the invention comprises a network of optical fibers which connect the monitoring stations to the central detection station for the purpose of transmitting incident analog optical, infrared and ultraviolet spectra to the central station for detection of fire conditions. The central detection and analysis station preferably includes a rotary scanner which scans each of the optical fibers, light from the fibers being dispersed by a prism associated with the scanner to allow detection of the various spectral components of the dispersed light by light sensitive semiconductors. The detected spectral components are then compared to known fire signal signatures which include flicker rate and spectral content information.

摘要翻译： 一种使用光纤将火焰信号从多个远程监测站传输到中央检测和分析站的火灾探测系统，本发明包括光纤网络，其将监测站连接到中央检测站，以便发射事件 模拟光学，红外和紫外光谱到中心站检测火灾状况。 中央检测和分析站优选地包括扫描每个光纤的旋转扫描器，来自光纤的光被与扫描仪相关联的棱镜分散，以允许通过光敏半导体检测分散光的各种光谱分量。 然后将检测到的光谱分量与包括闪烁速率和光谱内容信息的已知火信号特征进行比较。