-
公开(公告)号：US4751498A
公开(公告)日：1988-06-14
申请号：US838595
申请日：1986-03-11
申请人： Ram Shalvi , Rudor M. Teich , Keith Guillaume
发明人： Ram Shalvi , Rudor M. Teich , Keith Guillaume
CPC分类号： G08B26/002 , G08B25/018
摘要： A single-wire loop alarm system in which an identification module is placed across each alarm switch. Any module which is across an open switch is powered by the loop current and, in response to a pulse count in the loop representing its address, changes the loop impedance in order to report on its status. The loop current may alternate in direction so that oppositely poled modules may be used, thus allowing a larger number of powered modules to accommodated at the same time.
摘要翻译： 一个单线回路报警系统，其中识别模块放置在每个报警开关之间。 跨开放开关的任何模块由环路电流供电，响应于表示其地址的回路中的脉冲计数，改变环路阻抗以报告其状态。 环路电流可以在方向上交替，使得可以使用相对极化的模块，从而允许更多数量的电源模块同时容纳。
-
公开(公告)号：US4743901A
公开(公告)日：1988-05-10
申请号：US847270
申请日：1986-04-02
申请人： Kouichi Yamanoue , Junji Kitagawa
发明人： Kouichi Yamanoue , Junji Kitagawa
IPC分类号： H04B3/50 , G07C5/08 , G08B25/01 , G08C15/08 , G08C19/00 , G08C19/02 , H04B3/54 , H04J7/00 , G08C19/04
CPC分类号： G08C15/08 , G07C5/0825 , G08B25/018 , G08C19/025
摘要： A signal transmission system has a plurality of sensors, a plurality of modulation circuits connected to the sensors, a single demodulation circuit and a single power supply line for connecting the modulation circuits to the demodulation circuit. Each of the sensors has a resistor-capacitor type oscillation circuit of which the capacity varies with the variation of a physical quantity to be measured and outputs an oscillation output of the oscillation circuit as a sensor signal. Each of the modulation circuit has a one-shot circuit having a predetermined set time different from another one-shot circuit of another modulation circuit for sustaining the sensor signal for the predetermined set time. Each of the modulation circuits further has a transistor for switching and a zener diode of a zener voltage different from that of another zener diode of another modulation circuit. The transistor connects the zener diode to the electric power line to lower the voltage of the electric power line to the zener voltage when the sensor signal is inputted. The demodulation circuit has a plurality of comparators and a logic circuit. Each of the comparators compares the voltage of the power supply line with a reference voltage to generate a comparison signal. The logic circuit performs a logical operation of the comparison signals from the comparators to obtain the sensor signals at different output terminals.
摘要翻译： 信号传输系统具有多个传感器，连接到传感器的多个调制电路，单个解调电路和用于将调制电路连接到解调电路的单个电源线。 每个传感器具有电容器型振荡电路，其电容随待测物理量的变化而变化，并将振荡电路的振荡输出作为传感器信号输出。 每个调制电路具有与另一调制电路的另一个单触发电路不同的预定设定时间的单稳态电路，用于在预定设定时间内维持传感器信号。 每个调制电路还具有用于开关的晶体管和与另一调制电路的另一个齐纳二极管不同的齐纳电压的齐纳二极管。 当输入传感器信号时，晶体管将齐纳二极管连接到电力线，以将电力线的电压降低到齐纳电压。 解调电路具有多个比较器和逻辑电路。 每个比较器将电源线的电压与参考电压进行比较以产生比较信号。 逻辑电路执行来自比较器的比较信号的逻辑运算，以在不同的输出端获得传感器信号。
-
公开(公告)号：US4491828A
公开(公告)日：1985-01-01
申请号：US414431
申请日：1982-09-02
申请人： Aaron A. Galvin , Roy L. Harvey
发明人： Aaron A. Galvin , Roy L. Harvey
CPC分类号： G08B25/04 , G08B25/018
摘要： A multi-zone alarm system operative with a two-wire alarm loop and having a simple network at each alarm sensor for providing a coded signal indicative of sensor identity and relatively simple circuitry at a central location for interrogation of the remote sensors and determination of those sensors providing an alarm signal.
摘要翻译： 一个多区域报警系统，具有两线报警环路，每个报警传感器都有一个简单的网络，用于提供指示传感器身份的编码信号，并在中央位置提供相对简单的电路，用于询问远程传感器，并确定那些 传感器提供报警信号。
-
84.发明授权Intrusion alarm system for buildings utilizing the building structure as a communications path for alarm signals or for security system activation signals 失效使用建筑结构作为报警信号或安全系统启动信号的通信路径的建筑物的入侵报警系统
公开(公告)号：US4398184A
公开(公告)日：1983-08-09
申请号：US280298
申请日：1981-07-06
申请人： David R. Scott , Thomas S. Rhoades
发明人： David R. Scott , Thomas S. Rhoades
CPC分类号： G08B13/10 , G08B15/00 , G08B25/018
摘要： Sensors are carried by structural components, such as floors, walls, etc., of the building within the secure area. The sensor detects deflections of the various structural members in response to changes of the loading of structural members caused by the intruder and generates signals which are transmitted to a control center which receives the intrusion signals and generates alarm signals.The intrusion signals are transmitted to the control center through the building structure as impulsive loads applied to the building structure by transducers located in the secure area which are responsive to the signals generated by the sensors.The alarm signals generated in the control center are transmitted to security systems located in the control center, such as automatic door locking mechanisms, lights, audible alarms, disabling gas injecting systems, etc., by means of coded impulsive loads applied to the building structure by transducers located in the control center which are responsive to alarm signals.
摘要翻译： 传感器由安全区域内的建筑物的结构部件（例如地板，墙壁等）承载。 传感器响应于由入侵者引起的结构构件的负载变化而检测各种结构构件的偏转，并产生传送到接收入侵信号并产生报警信号的控制中心的信号。 入侵信号通过建筑结构被传送到控制中心，作为响应于由传感器产生的信号的位于安全区域中的换能器施加到建筑结构的冲击载荷。 在控制中心产生的报警信号通过施加到建筑结构的编码冲击载荷传送到位于控制中心的安全系统，例如自动门锁机构，灯，声音报警器，禁用气体喷射系统等 位于控制中心的响应于报警信号的换能器。
-
公开(公告)号：US4359721A
公开(公告)日：1982-11-16
申请号：US951765
申请日：1978-10-16
申请人： Aaron A. Galvin , Roy L. Harvey
发明人： Aaron A. Galvin , Roy L. Harvey
CPC分类号： G08B25/018 , G08B25/04
摘要： A multi-zone alarm system operative with a two-wire alarm loop and having a simple network at each alarm sensor for providing a coded signal indicative of sensor identity and relatively simple circuitry at a central location for interrogation of the remote sensors and determination of those sensors providing an alarm signal.
-
公开(公告)号：US4310835A
公开(公告)日：1982-01-12
申请号：US120644
申请日：1980-02-11
申请人： Philip C. Sefton
发明人： Philip C. Sefton
CPC分类号： G08B25/018 , G08B29/08
摘要： Security equipment comprises a plurality of normally-open or normally-closed switch contacts connected in a loop circuit to a central control circuit. Each pair of switch contacts has a respective resistor connected in parallel therewith and the control circuit is operable to detect changes in resistance due, for example, to an intruder operating one of the switches.
摘要翻译： 安全设备包括多个常开或常闭开关触点，它们连接到环路电路到中央控制电路。 每对开关触点具有与其并联连接的相应电阻器，并且控制电路可操作以检测例如由操作其中一个开关的入侵者引起的电阻变化。
-
公开(公告)号：US3916405A
公开(公告)日：1975-10-28
申请号：US44736374
申请日：1974-03-01
申请人： GOTANDA MOTOHIRO
发明人： GOTANDA MOTOHIRO
CPC分类号： G08B25/018
摘要： A system for supervising and monitoring normal or abnormal state in rooms or equipments in a building or buildings in which information signals are delivered from a signal transmitter through lines to a signal receiver, the information signals being discriminated by the signal receiver for supervising and monitoring the rooms or equipments. The system includes a signal transmitter for transmitting information signals of normal or abnormal state in rooms or equipments so as to generate and transmit the signals of different voltage responsive to varied kinds of the information signals. The signal receiver comprises an information detecting means for detecting the information signals of different voltage, a voltage discriminator circuit for discriminating the output from said information detecting means, and an indicator circuit indicating the signals delivered in response to the discriminated information.
摘要翻译： 一种用于监视和监测建筑物或建筑物中的信号信号从信号发射机通过线路传送到信号接收器的房间或设备中的正常或异常状态的系统，所述信号信号由信号接收器鉴别以监视和监视 房间或设备 该系统包括用于在房间或设备中发送正常或异常状态的信息信号的信号发射器，以响应于各种信息信号产生和发送不同电压的信号。 信号接收机包括用于检测不同电压的信息信号的信息检测装置，用于鉴别来自所述信息检测装置的输出的鉴别电路，以及指示响应于所识别的信息传送的信号的指示电路。
-
公开(公告)号：US3823391A
公开(公告)日：1974-07-09
申请号：US32563173
申请日：1973-01-22
CPC分类号： G08B25/018
摘要： A system for accommodating a simultaneous monitoring of the integrity of a plurality of remotely related buildings from a common observation station, characterized by a plurality of monitoring units each having an integrity monitoring circuit, integrated with one of a plurality of said remotely related buildings for continuously conducting an electrical current, the amperage of which is indicative of building integrity, and an observation circuit located at the observation station common to all monitoring units remotely related to the buildings including circuit means responsive to changes in said amperages for providing intelligence indicative of a changed status of building integrity.
-
公开(公告)号：US3797008A
公开(公告)日：1974-03-12
申请号：US3797008D
申请日：1972-01-21
申请人： NITTAN CO LTD
发明人： YUASA H
CPC分类号： G08B25/018
摘要： A fire detecting system having a voltage source, a pair of conductors extending from the source with a plurality of fire detectors connected across the conductors, means at the end of said conductors placing a constant load on the voltage source and means adjoining the voltage source for detecting loss of said load resulting from a break in one of said conductors.
-
公开(公告)号：US3778797A
公开(公告)日：1973-12-11
申请号：US3778797D
申请日：1972-07-10
申请人： PYOTT BOONE INC
发明人： KILLEN G
CPC分类号： G08B25/018
摘要： A device for monitoring a plurality of remote stations for disorders in which a high-impedance station line circuit is shunted by a disorder-responsive station switch with a distinctive lower resistance, whereupon a relay actuates an alarm and switches the station line circuit into an ohmmeter circuit. The storage-type digital ohmmeter indicates the location of the responding station; its readout is blocked after receipt of the first reading.
摘要翻译： 用于监视多个远程站的装置，其中高阻抗站线路电路由具有独特的较低电阻的无序响应站开关分流，于是继电器致动报警并将站线电路切换为欧姆表 电路。 存储型数字欧姆表指示响应台的位置; 其读数在收到一读后被阻止。
-
-
-
-
-
-
-
-
-
搜索结果
92 条记录 (耗时 0.016 秒)
